Linksys Wireless-G Broadband Router
Model WRT54GL

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Copyright and Trademarks

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2007 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

WARNING: This product contains chemicals, including lead, known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling.

How to Use This User Guide

This User Guide has been designed to make understanding networking with the Wireless-G Broadband Router easier than ever. Look for the following items when reading this User Guide:

This checkmark means there is a note of interest and is something you should pay special attention to while using the Wireless-G Broadband Router.

This exclamation point means there is a caution or warning and is something that could damage your property or the Wireless-G Broadband Router.

This question mark provides you with a reminder about something you might need to do while using the Wireless-G Broadband Router.

In addition to these symbols, there are definitions for technical terms that are presented like this:

word: definition.

Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this:

Figure 0-1: Sample Figure Description

Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.

WRT54GL-UG-70125A DF

Table of Contents

Chapter 1: Introduction 1 Welcome 1 What’s in this User Guide? 2 Chapter 2: Planning Your Wireless Network 4 Network Topology 4 Ad-Hoc versus Infrastructure Mode 4 Network Layout 4 Chapter 3: Getting to Know the Wireless-G Broadband Router 6 The Back Panel 6 The Front Panel 7 Chapter 4: Connecting the Wireless-G Broadband Router 8 Overview 8 Hardware Installation for Connection to Your Broadband Modem 8 Hardware Installation for Connection to Another Router 10 Chapter 5: Setting up the Wireless-G Broadband Router 12 Overview 12 Using the Setup Wizard 12 Using SecureEasySetup to Configure Your Notebook 29 Chapter 6: Configuring the Wireless-G Broadband Router 32 Overview 32 The Setup Tab - Basic Setup 33 The Setup Tab - DDNS 38 The Setup Tab - MAC Address Clone 39 The Setup Tab - Advanced Routing 40 The Wireless Tab - Basic Wireless Settings 41 The Wireless Tab - Wireless Security 42 The Wireless Tab - Wireless MAC Filter 45 The Wireless Tab - Advanced Wireless Settings 46 The Security Tab - Firewall 48 The Security Tab - VPN Passthrough 48 The Access Restrictions Tab - Internet Access 49 The Applications and Gaming Tab - Port Range Forward 51 The Applications & Gaming Tab - Port Triggering 52 The Applications and Gaming Tab - DMZ 53 The Applications and Gaming Tab - QoS 53 Wired QoS 53 Wireless QoS 54 The Administration Tab - Management 55 The Administration Tab - Log 55 The Administration Tab - Diagnostics 56 The Administration Tab - Factory Defaults 57 The Administration Tab - Firmware Upgrade 57 The Administration Tab - Config Management 57 The Status Tab - Router 58 The Status Tab - Local Network 59 The Status Tab - Wireless 59 Appendix A: Troubleshooting 60 Common Problems and Solutions 60 Frequently Asked Questions 68 Appendix B: Wireless Security 75 Security Precautions 75 Security Threats Facing Wireless Networks 75 Appendix C: Upgrading Firmware 78 Appendix D: Windows Help 79 Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter80 Windows 98SE or Me Instructions 80 Windows 2000 or XP Instructions 80 For the Router’s Web-based Utility 81 Appendix F: Glossary 82 Appendix G: Specifications 89 Appendix H: Warranty Information 91 Appendix I: Regulatory Information 92 Appendix J: Contact Information 99

List of Figures

Figure 3-1: The Router’s Back Panel 6 Figure 3-2: The Router’s Front Panel 7 Figure 4-1: Connecting Your Internet Connection 8 Figure 4-2: Connecting Your Network Devices 9 Figure 4-3: Connecting the Power 9 Figure 4-4: Diagram for Connection to Another Router 10 Figure 4-5: Connecting Another Router 10 Figure 4-6: Connecting Your Network Devices 11 Figure 4-7: Connecting the Power 11 Figure 5-1: Setup Wizard’s Welcome - Language Selection Screen 12 Figure 5-2: Setup Wizard’s Welcome - Start Wizard Screen 12 Figure 5-3: Setup Wizard’s License Agreement Screen 13 Figure 5-4: Setup Wizard’s Disconnect the Modem from the PC Screen 13 Figure 5-5: Setup Wizard’s Connect the Modem to the Router Screen 14 Figure 5-6: Setup Wizard’s Connect a Network Cable to a PC Screen 14 Figure 5-7: Setup Wizard’s Connect the Network Cable to the Router Screen 15 Figure 5-8: Setup Wizard’s Power on the Router Screen 15 Figure 5-9: Setup Wizard’s Check the Router’s Status Screen 16 Figure 5-10: Setup Wizard’s Configure Cable or DHCP Settings Screen 16 Figure 5-11: Setup Wizard’s Configure DSL (PPPoE) Settings Screen 17 Figure 5-12: Setup Wizard’s Advanced Internet Settings - Static IP Screen 17 Figure 5-13: Setup Wizard’s Advanced Internet Settings - PPTP Screen 18 Figure 5-14: Setup Wizard’s Keep Alive/Connect on Demand (PPTP Continued) Screen 18 Figure 5-15: Setup Wizard’s Advanced Internet Settings - L2TP Screen 19 Figure 5-16: Setup Wizard’s Advanced Internet Settings - Telstra Screen 20 Figure 5-17: Setup Wizard’s Set the Router’s Password Screen 21 Figure 5-18: Setup Wizard’s Configure Wireless Settings Screen 21 Figure 5-19: Setup Wizard’s SecureEasySetup Screen 22 Figure 5-20: SecureEasySetup Logo 22 Figure 5-21: Additional Information - Hardware Button 22 Figure 5-22: Additional Information - Software Button 22 Figure 5-23: Setup Wizard’s Configure Wireless Settings Screen 23 Figure 5-24: Setup Wizard’s Confirm New Settings Screen 23 Figure 5-25: Setup Wizard’s Safe Surfing Screen 24 Figure 5-26: Setup Wizard’s Congratulations Screen 24 Figure 5-27: Setup Wizard’s Configure Wireless Settings Screen 25 Figure 5-28: Setup Wizard’s Wireless Settings Screen 25 Figure 5-29: Setup Wizard’s Wireless Security - WPA-PSK Screen 26 Figure 5-30: Setup Wizard’s Wireless Security - WEP (64-Bit) Screen 27 Figure 5-32: Setup Wizard’s Confirm New Settings Screen 27 Figure 5-31: Setup Wizard’s Norton Screen 28 Figure 5-33: Setup Wizard’s Congratulations Screen 28 Figure 5-34: Setup Wizard’s Welcome - Start Wizard Screen 29 Figure 5-35: SecureEasySetup Welcome Screen 29 Figure 5-36: Configure Wireless Settings #1 Screen 30 Figure 5-37: Configure Wireless Settings #2 Screen 30 Figure 5-38: Your Wireless Settings Screen 31 Figure 6-1: Password Screen 32 Figure 6-2: Setup Tab - Basic Setup 33 Figure 6-3: DHCP Connection Type 33 Figure 6-4: Static IP Connection Type 33 Figure 6-5: PPPoE Connection Type 34 Figure 6-6: PPTP Connection Type 34 Figure 6-7: L2TP Connection Type 34 Figure 6-8: Telstra Cable Connection Type 35 Figure 6-9: Optional Settings 35 Figure 6-10: Router IP 35 Figure 6-11: Network Address Server Settings 36 Figure 6-12: Time Setting 37 Figure 6-13: Setup Tab - DDNS - DynDNS 38 Figure 6-14: Setup Tab - DDNS - TZO 38 Figure 6-15: Setup Tab - MAC Address Clone 39 Figure 6-16: Setup Tab - Advanced Routing (Gateway) 40 Figure 6-17: Setup Tab - Advanced Routing (Router) 40 Figure 6-18: Wireless Tab - Basic Wireless Settings 41 Figure 6-19: Wireless Tab - Wireless Security 42 Figure 6-20: Wireless Tab - Wireless Security (WPA Enterprise) 42 Figure 6-21: Wireless Tab - Wireless Security (WPA2 Personal) 43 Figure 6-22: Wireless Tab - Wireless Security (WPA2 Enterprise) 43 Figure 6-23: Wireless Tab - Wireless Security (RADIUS) 44 Figure 6-24: Wireless Tab - Wireless Security (WEP) 44 Figure 6-25: Wireless Tab - Wireless MAC Filter 45 Figure 6-26: MAC Address Filter List 45 Figure 6-27: Wireless Tab - Advanced Wireless Settings 46 Figure 6-28: Security Tab - Firewall 48 Figure 6-29: Security Tab - VPN Passthrough 48 Figure 6-30: Access Restrictions Tab - Internet Access 49 Figure 6-31: Internet Policy Summary 49 Figure 6-32: List of PCs 49 Figure 6-33: Port Services 50 Figure 6-34: Applications and Gaming Tab - Port Range Forward 51 Figure 6-35: Applications and Gaming Tab - Port Triggering 52 Figure 6-36: Applications and Gaming Tab - DMZ 53 Figure 6-37: Applications and Gaming Tab - QoS 54 Figure 6-38: Administration Tab - Management 55 Figure 6-39: Administration Tab - Log 55 Figure 6-40: Administration Tab - Diagnostics 56 Figure 6-41: The Ping Test 56 Figure 6-42: The Traceroute Test 56 Figure 6-43: Administration Tab - Factory Defaults 57 Figure 6-44: Administration Tab - Firmware Upgrade 57 Figure 6-45: Administration Tab - Config Management 57 Figure 6-46: Status Tab - Router 58 Figure 6-47: Status Tab - Local Network 59 Figure 6-48: DHCP Clients Table 59 Figure 6-49: Status Tab - Wireless 59 Figure C-1: Upgrade Firmware 78 Figure E-1: IP Configuration Screen 80 Figure E-2: MAC Address/Adapter Address 80 Figure E-3: MAC Address/Physical Address 80

Wireless-G Broadband Router
Figure E-4: MAC Address Filter List 81
Figure E-5: MAC Address Clone 81

Chapter 1: Introduction

Welcome

Thank you for choosing the Linksys Wireless-G Broadband Router. The Wireless-G Broadband Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely.

How does the Wireless-G Broadband Router do all of this? A router is a device that allows access to an Internet connection over a network. With the Wireless-G Broadband Router, this access can be shared over the four switched ports and via the wireless broadcast at up to 11Mbps for Wireless-B or up to 54Mbps for Wireless-G.

Use the WPA standard to secure your wireless network while the whole network is protected through a Stateful Packet Inspection (SPI) firewall and Network Address Translation (NAT) technology. The Router’s SecureEasySetup™ feature makes it a snap to set up WPA when you have other SecureEasySetup devices— notebooks, printers, other peripherals—comprising your network. Run the Setup Wizard and it will guide you through the steps. You can also access the Router’s features through the easy-to-use, browser-based utility.

But what does all of this mean?

Networks are useful tools for sharing computer resources. You can access one printer from different computers and access data located on another computer's hard drive. Networks are even used for playing multiplayer video games. So, networks are not only useful in homes and offices, they can also be fun.

PCs on a wired network create a LAN, or Local Area Network. They are connected with Ethernet cables, which is why the network is called “wired”.

PCs equipped with wireless cards or adapters can communicate without cumbersome cables. By sharing the same wireless settings, within their transmission radius, they form a wireless network. This is sometimes called a WLAN, or Wireless Local Area Network. The Wireless-G Broadband Router bridges wireless networks of both 802.11b and 802.11g standards and wired networks, allowing them to communicate with each other.

With your networks all connected, wired, wireless, and the Internet, you can now share files and Internet access—and even play games. All the while, the Wireless-G Broadband Router protects your networks from unauthorized and unwelcome users.

Linksys recommends using the Setup CD-ROM for first-time installation of the Router. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then use the instructions in this Guide to help you connect the Wireless-G Broadband Router, set it up, and configure it to bridge your different networks. These instructions should be all you need to get the most out of the Wireless-G Broadband Router.

WPA (Wi-fi Protected Access): a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.

SPI (Stateful Packet Inspection) firewall: a technology that inspects incoming packets of information before allowing them to enter the network.

firewall: Security measures that protect the resources of a local network from intruders.

NAT (Network AddressTranslation): NAT technology

translates IP addresses of a local area network to a

different IP address for the Internet.

LAN (Local Area Network): The computers and networking products that make up the network in your home or office.

What’s in this User Guide?

This user guide covers the steps for setting up and using the Wireless-G Broadband Router.

Chapter 2: Planning Your Wireless Network

Network Topology

A wireless local area network (WLAN) is exactly like a regular local area network (LAN), except that each computer in the WLAN uses a wireless device to connect to the network. Computers in a WLAN share the same frequency channel and SSID, which is an identification name shared by the wireless devices belonging to the same wireless network.

Ad-Hoc versus Infrastructure Mode

Unlike wired networks, wireless networks have two different modes in which they may be set up: infrastructure and ad-hoc. An infrastructure configuration is a WLAN and wired LAN communicating to each other through an access point. An ad-hoc configuration is wireless-equipped computers communicating directly with each other. Choosing between these two modes depends on whether or not the wireless network needs to share data or peripherals with a wired network or not.

If the computers on the wireless network need to be accessible by a wired network or need to share a peripheral, such as a printer, with the wired network computers, the wireless network should be set up in Infrastructure mode. The basis of Infrastructure mode centers around a wireless router or an access point, such as the Wireless-G Broadband Router, which serves as the main point of communications in a wireless network. The Router transmits data to PCs equipped with wireless network adapters, which can roam within a certain radial range of the Router. You can arrange the Router and multiple access points to work in succession to extend the roaming range, and you can set up your wireless network to communicate with your Ethernet hardware as well.

If the wireless network is relatively small and needs to share resources only with the other computers on the wireless network, then the Ad-Hoc mode can be used. Ad-Hoc mode allows computers equipped with wireless transmitters and receivers to communicate directly with each other, eliminating the need for a wireless router or access point. The drawback of this mode is that in Ad-Hoc mode, wireless-equipped computers are not able to communicate with computers on a wired network. And, of course, communication between the wireless-equipped computers is limited by the distance and interference directly between them.

Network Layout

The Wireless-G Broadband Router has been specifically designed for use with both your 802.11b and 802.11g products. Now, products using these standards can communicate with each other.

SSID (service set identifier): your wireless network’s name.

infrastructure: a wireless network that is bridged to a wired network via an access point.

ad-hoc: a group of wireless devices communicating directly to each other (peer-topeer) without the use of an access point.

The Wireless-G Broadband Router is compatible with all 802.11b and 802.11g adapters, such as the Notebook Adapters (WPC54G, WPC11) for your laptop computers, PCI Adapter (WMP54G, WMP11) for your desktop PC, and USB Adapter (WUSB54G, WUSB11) when you want to enjoy USB connectivity. The Broadband Router will also communicate with the Wireless PrintServer (WPS54G) and Wireless Ethernet Bridges (WET54G, WET11).

When you wish to connect your wireless network with your wired network, you can use the Wireless-G Broadband Router’s four LAN ports. To add more ports, any of the Wireless-G Broadband Router's LAN ports can be connected to any of Linksys's switches (such as the SD205 or SD208).

With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at www.linksys.com for more information about products that work with the Wireless-G Broadband Router.

Chapter 3: Getting to Know the Wireless-G Broadband Router

The Back Panel

The Router's ports, where the cables are connected, are located on the back panel.

Reset Button There are two ways to reset the Router's factory defaults. Either press the Reset Button, for approximately five seconds, or restore the defaults from the Administration tab - Factory Defaults in the Router's Web-based Utility.
Internet The Internet port is where you will connect your broadband Internet connection.
1, 2, 3, 4 These ports (1, 2, 3, 4) connect the Router to your networked PCs and other Ethernet network devices.
Power The Power port is where you will connect the power adapter.

IMPORTANT: Resetting the Router will erase all of your settings (Internet connection, wireless security, and other settings) and replace them with the factory defaults. Do not reset the Router if you want to retain these settings.

The Front Panel

The Router’s SecureEasySetup button (the Cisco logo) and LEDs are located on the front panel.

NOTE: SecureEasySetup is a feature that makes it orange when the Router is powered on. The color orange indicates that the Router is not using

(Cisco logo) Orange/White. The Cisco logo is the Router’s SecureEasySetup button. It lights up and will stay

easy to set up your wireless network. If you have the SecureEasySetup feature, while the color white indicates that the Router is using the

SecureEasySetup devices, run the Router’s Setup

SecureEasySetup feature. When the Router enters SecureEasySetup mode, the Cisco logo will Wizard CD-ROM and follow the on-screen

turn white and start flashing. After the Router has generated the SSID and WPA-PSK (also instructions to use SecureEasySetup.

called WPA-Personal) key, the Cisco logo will stop flashing and stay white.

To clear the SSID and WPA-PSK key, press and hold down the Cisco logo for five seconds. The Cisco logo will flash slowly as the Router resets itself. The Cisco logo will turn orange to indicate a successful reset.

Power Green. The Power LED lights up and will stay on while the Router is powered on. When the Router goes through its self-diagnostic mode during every boot-up, this LED will flash. When the diagnostic is complete, the LED will be solidly lit.

DMZ Green. The DMZ LED indicates when the DMZ function is being used. This LED will remain lit as long as DMZ is enabled.

WLAN Green. The WLAN LED lights up when the wireless feature is enabled. If the LED is flashing, the Router is actively sending or receiving data over the network.

1, 2, 3, 4 Green. These numbered LEDs, corresponding with the numbered ports on the Router’s back panel, serve two purposes. If the LED is continuously lit, the Router is successfully connected to a device through that port. A flashing LED indicates network activity over that port.

Internet Green. The Internet LED lights up when there is a connection made through the Internet port.

Chapter 4: Connecting the Wireless-G Broadband Router

Overview

This chapter includes two sets of instructions. If the Wireless-G Broadband Router will be the only router in your network, follow the instructions in “Hardware Installation for Connection to Your Broadband Modem.” If you want to install the Wireless-G Broadband Router behind another router in your network, then follow the instructions in “Hardware Installation for Connection to Another Router.”

Hardware Installation for Connection to Your Broadband Modem

  1. Power down your network devices.

  2. Locate an optimum location for the Router. The best place for the Router is usually at the center of your wireless network, with line of sight to all of your mobile stations.

  3. Fix the direction of the antennas. Try to place the Router in a position that will best cover your wireless network. Normally, the higher you place the antenna, the better the performance will be.

  4. Connect a standard Ethernet network cable to the Router’s Internet port. Then, connect the other end of the Ethernet cable to your cable or DSL broadband modem.

  5. Connect your network PCs or Ethernet devices to the Router’s numbered ports using standard Ethernet network cabling.

  6. Connect the AC power adapter to the Router's Power port and the other end into an electrical outlet. Only use the power adapter supplied with the Router. Use of a different adapter may result in product damage.

IMPORTANT: Make sure you use the power adapter that is supplied with the Router. Use of a different power adapter could damage the Router.

Now that the hardware installation is complete, proceed to “Chapter 5: Setting up the Wireless-G Broadband Router,” for directions on how to configure the Router.

Hardware Installation for Connection to Another Router

Before you install the Router, you must change the default IP address of the other router. This is mandatory because both routers may be set to the same IP address by default. If you do not change the other router’s default IP address, then you may not be able to set up the Router.

First, make sure the Router is NOT connected to your network. Then follow these instructions:

  1. To access the other router’s Web-based Utility, launch Internet Explorer or Netscape Navigator, and enter the other router’s default IP address, 192.168.1.1, in the Address field. Then press Enter.

  2. A password request page will appear. Leave the User Name field blank. In the Password field, enter the password you have set (the default password is admin). Then click the OK button.

  3. The first screen that appears will display the Setup tab. In the Network Setup section, there is a setting called Local IP Address, which is set to 192.168.1.1. Change this to 192.168.2.1.

  4. Click the Save Settings button to save your change, and then exit the Web-based Utility.

  5. Power down your network devices. Now you will begin the hardware installation of Router.

  6. Locate an optimum location for the Router. The best place for the Router is usually at the center of your wireless network, with line of sight to all of your mobile stations.

  7. Fix the direction of the antennas. Try to place the Router in a position that will best cover your wireless network. Normally, the higher you place the antenna, the better the performance will be.

  8. Connect a standard Ethernet network cable to the Router’s Internet port. Then, connect the other end of the Ethernet cable to one of the numbered Ethernet ports on your other router.

Chapter 4: Connecting the Wireless-G Broadband Router Hardware Installation for Connection to Another Router

NOTE: Steps 1-4 are instructions for a typical Linksys router; however, if you are using a non-Linksys router, refer to the other router’s documentation for instructions on how to change its local IP address to 192.168.2.1.

Broadband Internet Modem

Figure 4-4: Diagram for Connection to Another Router

Router

Wireless-G Broadband Router

    1. Decide which network computers or Ethernet devices you want to connect to the Router.

    2. Disconnect the selected computers or devices from the other router, and then connect them to the Router’s numbered ports using standard Ethernet network cabling.
  1. Connect the AC power adapter to the Router's Power port and the other end into an electrical outlet. Only use

IMPORTANT: Make sure you use the power the power adapter supplied with the Router. Use of a different adapter may result in product damage.

adapter that is supplied with the Router. Use of a different power adapter could damage the Router.

Now that the hardware installation is complete, proceed to “Chapter 5: Setting up the Wireless-G Broadband Router,” for directions on how to configure the Router.

Chapter 5: Setting up the Wireless-G Broadband Router

Overview

The Wireless-G Broadband Router Setup Wizard will guide you through the installation procedure. It will go through the instructions for configuring the Router’s network and wireless settings.

Using the Setup Wizard

  1. Insert the Setup Wizard CD-ROM into your CD-ROM drive. The Setup Wizard should run automatically, and the Welcome screen should appear. If it does not, click the Start button and choose Run. In the field that appears, enter D:\setup.exe (if “D” is the letter of your CD-ROM drive).

  2. The Setup Wizard will automatically detect the language setting of your PC. On the initial Welcome screen, click the Next button if you want to proceed with the Setup Wizard using the current language. If you want to use a different language, select the appropriate language, and then click the Next button.

  3. On the following Welcome screen, click the Click Here to Start button if this is the first time you are running the Setup Wizard. These are your other choices:

Wireless Setup - If you have a computer displaying the SecureEasySetup logo, then click Wireless Setup and proceed to the section at the end of this chapter, “Using SecureEasySetup to Configure Your Notebook.

NOTE: SecureEasySetup uses WPA-Personal encryption. If your current wireless devices do not support WPA-Personal security, then you cannot use SecureEasySetup on your network. You will need to manually configure your network security using the encryption supported by your existing devices.

Norton Internet Security - Click the Norton Internet Security button to install the Norton Internet Security software program.

User Guide - Click the User Guide button to open the PDF file of this User Guide.

Exit - Click the Exit button to exit the Setup Wizard.

Chapter 5: Setting up the Wireless-G Broadband Router Overview

  1. After reading the License Agreement, click the Next button if you accept, or click the Cancel button to end the installation.

  2. The Setup Wizard will ask you to disconnect your broadband modem from your PC. After you have done so, click the Next button.

  3. The Setup Wizard will ask you to connect your broadband modem to the Router. After you have done so, click the Next button.

  4. The Setup Wizard will ask you to connect a network cable to your PC. After you have done so, click the Next button.

  5. The Setup Wizard will ask you to connect the other end of the network cable to the Router. Then you can also connect additional PCs to the Router. After you have done so, click the Next button.

  6. The Setup Wizard will ask you to power on the Router. After you have done so, click the Next button.

  7. Make sure the Router’s Power, Internet, and numbered LEDs (depending on the number of PCs connected) are lit on its front panel. After you have done so, click the Next button.

  8. The Setup Wizard will automatically detect the Internet connection type you use: Cable or DHCP or DSL (PPPoE). If the Setup Wizard cannot detect your Internet connection type, you will see the Advanced Internet Settings screen, and you will be asked to select your Internet connection type: Static IP, PPTP, L2TP, or Telstra. Proceed to the appropriate section for your Internet connection type.

Cable or DHCP Host Name - Enter the Host Name if required by your ISP; otherwise, leave this field blank. Domain Name - Enter the Domain Name if required by your ISP; otherwise, leave this field blank. Click the Next button to continue or the Back button to return to the previous screen.

DSL (PPPoE) User Name - Enter the User Name provided by your ISP. Password - Enter the Password provided by your ISP. Confirm - To confirm the Password, enter it again in this field. Keep Alive - If you want the Router to periodically check your Internet connection, select Keep Alive. Then

specify how often you want the Router to check the Internet connection. If the connection is down, the Router

will automatically re-establish your connection. Connect on Demand - If you want the Router to end the Internet connection after it has been inactive for a period of time, select Connect on Demand and designate the number of minutes you want that period of inactivity to last.

Click the Next button to continue or the Back button to return to the previous screen.

Static IP

Connection - If you are required to use a permanent IP address to connect to the Internet, select Static IP from the drop-down menu. IP Address - Enter the IP address provided by your ISP. Subnet Mask- Enter the Subnet Mask provided by your ISP. Gateway - Enter the Gateway IP address provided by your ISP. DNS 1-2 - Enter the DNS (Domain Name System) server IP address(es) provided by your ISP. You need to enter

at least one DNS address. Click the Next button to continue or the Back button to return to the previous screen.

PPTP

Connection - PPTP (Point-to-Point Tunneling Protocol) service is used in Europe only. If you are using a PPTP connection, select PPTP from the drop-down menu. User Name - Enter the User Name provided by your ISP. Password - Enter the Password provided by your ISP. Confirm - To confirm the Password, enter it again in this field. IP Address - Enter the IP address provided by your ISP. Subnet Mask- Enter the Subnet Mask provided by your ISP. Gateway - Enter the Gateway IP address provided by your ISP. Click the Next button to continue or the Back button to return to the previous screen. Keep Alive - If you want the Router to periodically check your Internet connection, select Keep Alive. Then

specify how often you want the Router to check the Internet connection. If the connection is down, the Router

will automatically re-establish your connection. Connect on Demand - If you want the Router to end the Internet connection after it has been inactive for a period of time, select Connect on Demand and designate the number of minutes you want that period of inactivity to last.

Click the Next button to continue or the Back button to return to the previous screen.

L2TP

Connection - If you are using an L2TP (Layer 2 Tunneling Protocol) connection, select L2TP from the drop- down menu. User Name - Enter the User Name provided by your ISP. Password - Enter the Password provided by your ISP. Confirm - To confirm the Password, enter it again in this field. L2TP Server - Enter the IP address of the L2TP server you are using; this should be provided by your ISP. Keep Alive - If you want the Router to periodically check your Internet connection, select Keep Alive. Then

specify how often you want the Router to check the Internet connection. If the connection is down, the Router

will automatically re-establish your connection. Connect on Demand - If you want the Router to end the Internet connection after it has been inactive for a period of time, select Connect on Demand and designate the number of minutes you want that period of inactivity to last.

Click the Next button to continue or the Back button to return to the previous screen.

Telstra

Connection - Telstra is a service used in Australia only. If you are using this service, select Telstra from the drop-down menu. User Name - Enter the User Name provided by your ISP. Password - Enter the Password provided by your ISP. Confirm - To confirm the Password, enter it again in this field. Heart Beat Server - Enter the IP address of the Heart Beat Server server you are using (this should be

provided by your ISP). Keep Alive - If you want the Router to periodically check your Internet connection, select Keep Alive. Then

specify how often you want the Router to check the Internet connection. If the connection is down, the Router will automatically re-establish your connection. Connect on Demand - If you want the Router to end the Internet connection after it has been inactive for a

period of time, select Connect on Demand and designate the number of minutes you want that period of inactivity to last. Click the Next button to continue or the Back button to return to the previous screen.

  1. The Router provides a Web-based Utility you can use for configuring the Router from any networked PC. Password - Enter a password that will control access to the Utility. Confirm - Enter the password again in the Confirm field. Click the Next button to continue or the Back button to return to the previous screen.

  2. There are two ways to configure the Router’s wireless settings, SecureEasySetup and manual configuration.

If you have other SecureEasySetup devices, such as notebook adapters or printers, then you can use the Router’s SecureEasySetup feature to create your wireless network. Proceed to the section, “Using the Router’s SecureEasySetup Feature.”

If you do not have other SecureEasySetup devices, then proceed to the section, “Manually Configuring the Router’s Wireless Settings.”

Using the Router’s SecureEasySetup Feature

Read these instructions before you press any SecureEasySetup buttons. You should locate the SecureEasySetup buttons of your devices before using the Router’s SecureEasySetup feature.

NOTE: SecureEasySetup uses WPA-Personal encryption. If your current wireless devices do not support WPA-Personal security, then you cannot use SecureEasySetup on your network. You will need to manually configure your network security using the encryption supported by your existing devices.

1. Before you push any button, locate the SecureEasySetup button for each of your other SecureEasySetup devices. If you are not sure where to find this button, click Where is my other SecureEasySetup button?

You will see a screen showing the SecureEasySetup logo. Click the Next button to continue or the Close

button to return to the Configure Wireless Settings screen.

You will see a screen with instructions on how to locate the SecureEasySetup hardware button. If your device does not have a hardware button, it most likely will have a software button. Click the Next button for instructions to locate the software button, or click the Close button to return to the Configure Wireless Settings screen.

You will see a screen with instructions on how to locate the SecureEasySetup software button. Click the Close button to return to the Configure Wireless Settings screen.

Chapter 5: Setting up the Wireless-G Broadband Router Using the Setup Wizard

2. Press the Router’s orange Cisco logo on its front panel. When the logo turns white and begins to flash, press the SecureEasySetup button on another device. The Router’s Cisco logo will stop flashing when the device has been added to the network. Then repeat this procedure for each additional SecureEasySetup device.

When you have finished configuring the devices in your wireless network, click the Next button to continue.

NOTE: You can only add one SecureEasySetup device at a time.

    1. The Setup Wizard will ask you to review your settings before it saves them. Write down these settings if you need to manually configure any non-SecureEasySetup devices.

    2. Click the Yes button if you are satisfied with your settings, or click the No button if you do not want to save your new settings.
  1. After the settings have been saved, the Safe Surfing screen will appear. Click the Norton Internet Security Suite button to install the special edition of Norton Internet Security on your computer, or click the Finish button to complete the Setup Wizard.

  2. The Congratulations screen will appear. Click the Online Registration button to register the Router, or click the Exit button to exit the Setup Wizard.

Congratulations! The installation of the Wireless-G Broadband Router is complete.

If you want to make advanced configuration changes, proceed to “Chapter 6: Configuring the Wireless-G Broadband Router.”

Manually Configuring the Router’s Wireless Settings

  1. If you do not have other SecureEasySetup devices, then click the Enter Wireless Settings Manually button.

  2. The Setup Wizard will ask you to enter the settings for your wireless network.

In the SSID field, enter the name of your wireless network. The SSID must be identical for all devices in the network. The default setting is linksys (all lowercase).

NOTE: An SSID is the network name shared by all devices in a wireless network. Your network’s SSID should be unique to your network and identical for all devices within the network. Select the operating channel for your wireless network. All of your wireless devices will use this channel to communicate.

From the Network Mode drop-down menu, select the wireless standards running on your network. If you have both 802.11g and 802.11b devices in your network, keep the default setting, Mixed Mode. If you have only 802.11g devices, select G-Only. If you have only 802.11b devices, select B-Only. If you want to disable your wireless network, select Disable.

Enter a name for the Router in the Device Name field.

Click the Next button to continue or the Back button to return to the previous screen.

Chapter 5: Setting up the Wireless-G Broadband Router Using the Setup Wizard

3. Select the method of security you want to use: WPA-PSK (also called WPA-Personal), WEP (64-Bit), or WEP (128-Bit). WPA stands for Wi-Fi Protected Access, and WEP stands for Wired Equivalent Privacy. WPA is a stronger security method than WEP. Proceed to the appropriate section for your security method.

If you want to use WPA-RADIUS (also called WPA-Enterprise), then you should select Disabled and use the Router’s Web-based Utility to configure your wireless security settings. Click the Next button and proceed to step 4.

If you do not want to use any wireless security method, select Disabled and then click the Next button. Proceed to step 4.

WPA-PSK

WPA-PSK offers two encryption methods, TKIP and AES, with dynamic encryption keys. Select TKIP or AES for encryption. Then enter a Passphrase that is 8-32 characters in length.

Encryption - Select the type of algorithm you want to use, TKIP or AES, from the Encryption drop-down menu.

Passphrase - Enter a Passphrase, also called a pre-shared key, of 8-32 characters in the Passphrase field. The longer and more complex your Passphrase is, the more secure your network will be.

Click the Next button to continue or the Back button to return to the previous screen.

wpa (wi-fi protected access: a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.

wep (wired equivalent privacy): a method of encrypting network data transmitted on a wireless network for greater security.

radius (remote authentication dial-in user service): a protocol that uses an authentication server to control network access.

encryption: encoding data transmitted in a network.

WEP (64-Bit)

Enter a passphrase or WEP key.

Passphrase - Enter a passphrase in the Passphrase field, so a WEP key is automatically generated. The passphrase is case-sensitive and should not be longer than 16 alphanumeric characters. It must match the passphrase of your other wireless network devices and is compatible with Linksys wireless products only. (If you have any non-Linksys wireless products, enter the WEP key manually on those products.)

WEP Key - The WEP key you enter must match the WEP key of your wireless network. For 64-bit encryption, enter exactly 10 hexadecimal characters. Valid hexadecimal characters are “0” to “9” and “A” to “F”.

Click the Next button to continue or the Back button to return to the previous screen.

WEP (128-Bit)

Enter a passphrase or WEP key.

Passphrase - Enter a passphrase in the Passphrase field, so a WEP key is automatically generated. The passphrase is case-sensitive and should not be longer than 16 alphanumeric characters. It must match the passphrase of your other wireless network devices and is compatible with Linksys wireless products only. (If you have any non-Linksys wireless products, enter the WEP key manually on those products.)

WEP Key - The WEP key you enter must match the WEP key of your wireless network. For 128-bit encryption, enter exactly 26 hexadecimal characters. Valid hexadecimal characters are “0” to “9” and “A” to “F”.

Click the Next button to continue or the Back button to return to the previous screen.

  1. The Setup Wizard will ask you to review your settings before it saves them. Click the Yes button if you are satisfied with your settings, or click the No button if you do not want to save your new settings.

  2. After the settings have been saved, the Safe Surfing screen will appear. Click the Norton Internet Security Suite button to install the special edition of Norton Internet Security on your computer, or click the Finish button to complete the Setup Wizard.

  3. The Congratulations screen will appear. Click the Online Registration button to register the Router, or click the Exit button to exit the Setup Wizard.

Congratulations! The installation of the Wireless-G Broadband Router is complete.

If you want to make advanced configuration changes, proceed to “Chapter 6: Configuring the Wireless-G Broadband Router.”

Using SecureEasySetup to Configure Your Notebook

This section explains how to use SecureEasySetup if you have a computer displaying the SecureEasySetup logo.

NOTE: SecureEasySetup uses WPA-Personal encryption. If your current wireless devices do not support WPA-Personal security, then you cannot use SecureEasySetup on your network. You will need to manually configure your network security using the encryption supported by your existing devices.

    1. After you have clicked Wireless Setup on the Welcome screen, the first screen that appears will describe the two steps you will take to configure your notebook. Click the Next button to continue.

    2. To exit the Wireless Setup Wizard, click the Exit button. If you need more information, click the Help button.
    1. The next screen will tell you to press the lighted Cisco logo on the Router. After you have pressed the logo, click the Next button to continue.

    2. To exit the Wireless Setup Wizard, click the Exit button. If you need more information, click the Help button.
    1. Click the on-screen START button to continue.

    2. To exit the Wireless Setup Wizard, click the Exit button. If you need more information, click the Help button. To return to the previous screen, click the Back button.
  1. The Your Wireless Settings screen will appear when the wireless settings have been configured. To save your configuration settings to a text file on your computer, click the Save button. To print your configuration settings, click the Print button. (You may need these settings so you can manually configure any non-SecureEasySetup devices you may have.)

To exit the Wireless Setup Wizard, click the Exit button. If you need more information, click the Help button. To return to the previous screen, click the Back button.

Congratulations! The installation of the Wireless-G Broadband Router is complete.

If you want to make advanced configuration changes, proceed to “Chapter 6: Configuring the Wireless-G Broadband Router.”

Chapter 6: Configuring the Wireless-G Broadband

Router

Overview

Linksys recommends using the Setup CD-ROM for first-time installation of the Router. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then you can use the Web-based Utility to configure the Router. For advanced users, you may configure the Router’s advanced settings through the Web-based Utility.

This chapter will describe each web page in the Utility and each page’s key functions. The utility can be accessed via your web browser through use of a computer connected to the Router. For a basic network setup, most users will use these two screens of the Utility:

  • Basic Setup. On the Basic Setup screen, enter the settings provided by your ISP.

  • Management. Click the Administration tab and then the Management tab. The Router’s default password is admin. To secure the Router, change the Password from its default.

There are seven main tabs: Setup, Wireless, Security, Access Restrictions, Applications & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs.

To access the Web-based Utility, launch Internet Explorer or Netscape Navigator, and enter the Router’s default IP address, 192.168.1.1, in the Address field. Then press Enter.

A password request page, shown in Figure 6-1 will appear. (Non-Windows XP users will see a similar screen.) Leave the User Name field blank. The first time you open the Web-based Utility, use the default password admin. (You can set a new password from the Administration tab’s Management screen.) Then click the OK button.

NOTE: For first-time installation, Linksys recommends using the Setup Wizard on the Setup CD-ROM. If you want to configure advanced settings, use this chapter to learn about the Web-based Utility.

HAVE YOU: Enabled TCP/IP on your PCs? PCs communicate over the network with this protocol. Refer to “Appendix D: Windows Help” for more information on TCP/IP.

The Setup Tab - Basic Setup

The first screen that appears displays the Setup tab. This allows you to change the Router's general settings. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

Internet Setup

The Internet Setup section configures the Router to your Internet connection. Most of this information can be obtained through your ISP.

Internet Connection Type

Choose the type of Internet connection your ISP provides from the drop-down menu.

  • DHCP. By default, the Router’s Internet Connection Type is set to Automatic Configuration - DHCP, which should be kept only if your ISP supports DHCP or you are connecting through a dynamic IP address.

  • Static IP. If you are required to use a permanent IP address to connect to the Internet, select Static IP.

Internet IP Address. This is the Router’s IP address, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here.

Subnet Mask. This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP

will provide you with the Subnet Mask. Gateway. Your ISP will provide you with the Gateway Address, which is the ISP server’s IP address. Static DNS (1- 3). Your ISP will provide you with at least one DNS (Domain Name System) Server IP Address.

PPPoE. Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE.

User Name and Password. Enter the User Name and Password provided by your ISP.

Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the button.

Figure 6-3: DHCP Connection Type

Figure 6-4: Static IP Connection Type

Static IP address: a fixed address assigned to a computer or device connected to a network.

In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates.
Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds. Figure 6-5: PPPoE Connection Type
PPTP. Point-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only.
Specify Internet IP Address. This is the Router’s IP address, as seen from the Internet. Your ISP will provide you with the IP Address you need to specify here.
Subnet Mask. This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask.
Gateway. Your ISP will provide you with the Gateway Address.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds. Figure 6-6: PPTP Connection Type
L2TP. Layer 2 Tunneling Protocol (L2TP) is a service that applies to connections in Israel only. Check with your ISP for the necessary setup information.
User Name and Password. Enter the User Name and Password provided by your ISP.
Server IP Address. This is the IP address that the Router has, when seen from the Internet. Your ISP will provide you with the IP address you need to specify here. Connect on Demand and Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specific period of time (Max Idle Time). If your Internet connection has been Figure 6-7: L2TP Connection Type
Chapter 6: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 34

terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. To use Connect on Demand, click the button. If you want your Internet connection to remain on at all times, enter 0 in the Max Idle Time field. Otherwise, enter the number of minutes you want to have elapsed before your Internet access disconnects.

Keep Alive and Redial Period. This option keeps your Internet access connected indefinitely, even when it sits idle. If you select this option, the Router will periodically check your Internet connection. If the connection is down, then the Router will automatically re-establish the connection. To use this option, click the button next to Keep Alive. The default Redial Period is 30 seconds.

Telstra Cable. Telstra Cable is a service used in Australia only. Check with your ISP for the necessary setup information.

User Name and Password. Enter the User Name and Password provided by your ISP.

Server IP Address. This is the IP address that the Router has, when seen from the Internet. Your ISP will provide you with the IP address you need to specify here.

Connect on Demand and Max Idle Time. You can configure the Router to cut the Internet connection after it

has been inactive for a specific period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. To use Connect on Demand, click the button. If you want your Internet connection to remain on at all times, enter 0 in the Max Idle Time field. Otherwise, enter the number of minutes you want to have elapsed before your Internet access disconnects.

Keep Alive and Redial Period. This option keeps your Internet access connected indefinitely, even when it sits

idle. If you select this option, the Router will periodically check your Internet connection. If the connection is down, then the Router will automatically re-establish the connection. To use this option, click the button next to Keep Alive. The default Redial Period is 30 seconds.

Optional Settings

Some of these settings may be required by your ISP. Verify with your ISP before making any changes.

Router Name. In this field, you can type a name of up to 39 characters to represent the Router.

Host Name/Domain Name. These fields allow you to supply a host and domain name for the Router. Some ISPs,

usually cable ISPs, require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work.

MTU. MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission. The default setting is Auto. You should leave this value in the 1200 to 1500 range. To have the Router select the best MTU for your Internet connection, leave the default as Auto.

Network Setup

Network Setup changes the settings on the network connected to the Router’s Ethernet ports. Wireless Setup is performed through the Wireless tab.

Router IP

This presents both the Router’s IP Address and Subnet Mask as seen by your network.

Network Address Server Settings (DHCP)

The settings allow you to configure the Router’s Dynamic Host Configuration Protocol (DHCP) server function. The Router can be used as a DHCP server for your network and will automatically assign an IP address to each computer on your network. If you choose to enable the Router’s DHCP server option, your network PCs must connect to a DHCP server (the Router), and there cannot be any other DHCP server on your network.

DHCP Server. DHCP is enabled by factory default. If you already have a DHCP server on your network, or you don’t want a DHCP server, then select Disable (no other DHCP features will be available).

Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. Because the Router’s default IP address is 192.168.1.1, the Starting IP Address must be 192.168.1.2 or greater, but smaller than 192.168.1.253. The default Starting IP Address is 192.168.1.100.

Maximum Number of DHCP Users. Enter the maximum number of PCs that you want the DHCP server to assign IP addresses to. This number cannot be greater than 253. The default is 50.

Client Lease Time. Client Lease Time is the amount of time a network user will be allowed connection to the Router with their current dynamic IP address. Enter the amount of time, in minutes, that the user will be “leased” this dynamic IP address. After the time is up, the user will be automatically assigned a new dynamic IP address. The default is 0 minutes, which means one day.

Static DNS (1-3). The Domain Name System (DNS) is how the Internet translates domain or website names into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. If you wish to use another, type that IP Address in one of these fields. You can type up to three DNS Server IP Addresses here. The Router will use these for quicker access to functioning DNS servers.

WINS. The Windows Internet Naming Service (WINS) manages each PC’s interaction with the Internet. If you use a WINS server, enter that server’s IP Address here. Otherwise, leave this blank.

Time Setting

Change the time zone in which your network functions from this pull-down menu. (You can even automatically

adjust for daylight savings time.)

The Setup Tab - DDNS

The Router offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or other server behind the Router.

Before you can use this feature, you need to sign up for DDNS service with a DDNS service provider, www.dyndns.org or www.TZO.com. If you do not want to use this feature, keep the default setting, Disable. DDNS

DDNS Service If your DDNS service is provided by DynDNS.org, then select DynDNS.org from the drop-down menu. If your DDNS service is provided by TZO, then select TZO.com. The features available on the DDNS screen will vary, depending on which DDNS service provider you use.

DynDNS.org

DDNS Service. From this pull-down menu, enter the DDNS service with which you have membership.

User Name. Enter the User Name for your DDNS account

Password. Enter the Password for your DDNS account.

Host Name. The is the DDNS URL assigned by the DDNS service.

Internet IP Address. This is the Router’s current IP Address as seen on the Internet.

Status. This displays the status of the DDNS connection.

TZO.com

E-mail Address, TZO Key, and Domain Name. Enter the settings of the account you set up with TZO.

Internet IP Address. The Router’s Internet IP address is displayed here. Because it is dynamic, it will change.

Status. The status of the DDNS service connection is displayed here. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Setup Tab - MAC Address Clone

A MAC address is a 12-digit code assigned to a unique piece of hardware for identification. Some ISPs will require you to register a MAC address in order to access the Internet. If you do not wish to re-register the MAC address with your ISP, you may assign the MAC address you have currently registered with your ISP to the Router with the MAC Address Clone feature.

Enable/Disable. To have the MAC Address cloned, select Enable.

User Defined Entry. Enter the MAC Address registered with your ISP here. Figure 6-15: Setup Tab - MAC Address Clone

Clone Your PC’s MAC Address. Clicking this button will clone the MAC address.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Setup Tab - Advanced Routing

This tab is used to set up the Router’s advanced functions. Operating Mode allows you to select the type(s) of advanced functions you use. Dynamic Routing will automatically adjust how packets travel on your network. Static Routing sets up a fixed route to another network destination.

Operating Mode. Select the mode in which this Router will function. If this Router is hosting your network’s connection to the Internet, select Gateway. If another Router exists on your network, select Router. When Router is chosen, the Dynamic Routing option will be available.

Dynamic Routing. This feature enables the Router to automatically adjust to physical changes in the network’s layout and exchange routing tables with the other router(s). The Router determines the network packets’ route based on the fewest number of hops between the source and the destination. This feature is Disabled by default. From the drop-down menu, you can also select LAN & Wireless, which performs dynamic routing over your Ethernet and wireless networks. You can also select WAN, which performs dynamic routing with data coming from the Internet. Finally, selecting Both enables dynamic routing for both networks, as well as data from the Internet.

Static Routing. To set up a static route between the Router and another network, select a number from the Static Routing drop-down list. (A static route is a pre-determined pathway that network information must travel to reach a specific host or network.) Enter the information described below to set up a new static route. (Click the Delete This Entry button to delete a static route.)

Enter Route Name. Enter a name for the Route here, using a maximum of 25 alphanumeric characters.

Destination LAN IP. The Destination LAN IP is the address of the remote network or host to which you want to

assign a static route.

Subnet Mask. The Subnet Mask determines which portion of a Destination LAN IP address is the network

portion, and which portion is the host portion.

Default Gateway. This is the IP address of the gateway device that allows for contact between the Router and the remote network or host.

Interface. This interface tells you whether the Destination IP Address is on the LAN & Wireless (Ethernet and Figure 6-17: Setup Tab - Advanced Routing (Router)
wireless networks), the WAN (Internet), or Loopback (a dummy network in which one PC acts like a network—
necessary for certain software programs).
Click the Show Routing Table button to view the Static Routes you’ve already set up.
Change these settings as described here and click the Save Settings button to apply your changes or Cancel
Changes to cancel your changes.
Chapter 6: Configuring the Wireless-G Broadband Router 40
The Setup Tab - Advanced Routing

The Wireless Tab - Basic Wireless Settings

The basic settings for wireless networking are set on this screen.

Wireless Network Mode. From this drop-down menu, you can select the wireless standards running on your network. If you have both 802.11g and 802.11b devices in your network, keep the default setting, Mixed. If you have only 802.11g devices, select G-Only. If you have only 802.11b devices, select B-Only. If you do not have any 802.11g and 802.11b devices in your network, select Disable.

Wireless Network Name (SSID). The SSID is the network name shared among all devices in a wireless network. The SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed 32 characters (use any of the characters on the keyboard). Make sure this setting is the same for all devices in your wireless network. For added security, you should change the default SSID (linksys) to a unique name.

Wireless Channel. Select the appropriate channel from the list provided to correspond with your network settings. All devices in your wireless network must be broadcast on the same channel in order to function correctly.

Wireless SSID Broadcast. When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router's SSID, keep the default setting, Enable. If you do not want to broadcast the Router's SSID, then select Disable.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

IMPORTANT: If you are using WPA, always

remember that each device in your wireless The Wireless Security settings configure the security of your wireless network. There are four wireless security

The Wireless Tab - Wireless Security

network MUST use the same WPA method mode options supported by the Router: WPA Personal, WPA Enterprise, WPA2 Personal, WPA2 Enterprise, RADIUS, and shared key, or else the network will not and WEP. (WEP stands for Wired Equivalent Privacy, WPA stands for Wi-Fi Protected Access, which is a security function properly. standard stronger than WEP encryption. WPA2 is stronger than WPA. WPA Enterprise is WPA used in coordination with a RADIUS server. RADIUS stands for Remote Authentication Dial-In User Service.) These are briefly discussed here. For detailed instructions on configuring wireless security for the Router, turn to “Appendix B: Wireless Security.”

WPA Personal. WPA gives you two encryption methods, TKIP and AES, with dynamic encryption keys. Select the type of algorithm, TKIP or AES. Enter a WPA Shared Key of 8-63 characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change the encryption keys.

WPA Enterprise. This option features WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) First, select the type of WPA algorithm you want to use, TKIP or AES. Enter the RADIUS server’s IP Address and port number, along with a key shared between the Router and the server. Last, enter a Key Renewal Timeout, which instructs the Router how often it should change the encryption keys.

WPA2 Personal. WPA2 gives you two encryption methods, TKIP and AES, with dynamic encryption keys. Select the type of algorithm, AES, or TKIP + AES. Enter a WPA Shared Key of 8-63 characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change the encryption keys.

WPA2 Enterprise. This option features WPA2 used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) First, select the type of WPA algorithm you want to use, AES, or TKIP + AES. Enter the RADIUS server’s IP Address and port number, along with a key shared between the Router and the server. Last, enter a Key Renewal Timeout, which instructs the Router how often it should change the encryption keys.

RADIUS. This option features WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) First, enter the RADIUS server’s IP Address and port number, along with a key shared between the Router and the server. Then, select a Default Transmit Key (choose which Key to use), and a level of WEP encryption, 64 bits 10 hex digits or 128 bits 26 hex digits. Last, either generate a WEP key using the Passphrase or enter the WEP key manually.

WEP. WEP is a basic encryption method, which is not as secure as WPA. To use WEP, select a Default Transmit Key (choose which Key to use), and a level of WEP encryption, 64 bits 10 hex digits or 128 bits 26 hex digits. Then either generate a WEP key using the Passphrase or enter the WEP key manually.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. For detailed instructions on configuring wireless security for the Router, turn to “Appendix B: Wireless Security.”

IMPORTANT: If you are using WEP encryption, always remember that each device in your wireless network MUST use the same WEP encryption method and encryption key, or else your wireless network will not function properly.

The Wireless Tab - Wireless MAC Filter

Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius.

Wireless MAC Filter. To filter wireless users by MAC Address, either permitting or blocking access, click Enable. If you do not wish to filter users by MAC Address, select Disable.

Prevent. Clicking this button will block wireless access by MAC Address.

Permit Only. Clicking this button will allow wireless access by MAC Address.

Edit MAC Address Filter List. Clicking this button will open the MAC Address Filter List. On this screen, you can list users, by MAC Address, to whom you wish to provide or block access. For easy reference, click the Wireless Client MAC List button to display a list of network users by MAC Address.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Wireless Tab - Advanced Wireless Settings

This tab is used to set up the Router’s advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.

Authentication Type. The default is set to Auto, which allows either Open System or Shared Key authentication to be used. With Open System authentication, the sender and the recipient do NOT use a WEP key for authentication. With Shared Key authentication, the sender and recipient use a WEP key for authentication.

Basic Rate. The Basic Rate setting is not actually one rate of transmission but a series of rates at which the Router can transmit. The Router will advertise its Basic Rate to the other wireless devices in your network, so they know which rates will be used. The Router will also advertise that it will automatically select the best rate for transmission. The default setting is Default, when the Router can transmit at all standard wireless rates (1-2Mbps, 5.5Mbps, 11Mbps, 18Mbps, and 24Mbps). Other options are 1-2Mbps, for use with older wireless technology, and All, when the Router can transmit at all wireless rates. The Basic Rate is not the actual rate of data transmission. If you want to specify the Router’s rate of data transmission, configure the Transmission Rate setting.

Transmission Rate. The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds, or you can select Auto to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client. The default value is Auto.

CTS Protection Mode. CTS (Clear-To-Send) Protection Mode should remain disabled unless you are having severe problems with your Wireless-G products not being able to transmit to the Router in an environment with heavy 802.11b traffic. This function boosts the Router’s ability to catch all Wireless-G transmissions but will severely decrease performance.

Frame Burst. Enabling this option should provide your network with greater performance, depending on the manufacturer of your wireless products. If you are not sure how to use this option, keep the default, Disable.

Beacon Interval. The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network.

DTIM Interval. This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1.

Fragmentation Threshold. This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.

RTS Threshold. Should you encounter inconsistent data flow, only minor reduction of the default value, 2347, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS Threshold value should remain at its default value of 2347.

AP Isolation. This isolates all wireless clients and wireless devices on your network from each other. Wireless devices will be able to communicate with the Router but not with each other. To use this function, select On. AP Isolation is Off by default.

Secure Easy Setup. This feature allows you to enable or disable the SecureEasySetup feature. Select Disable to disable the feature and turn off the button’s light. The feature is enabled by default.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Security Tab - Firewall

Firewall Protection. This feature employs Stateful Packet Inspection (SPI) for a more detailed review of data packets entering your network environment.

Block WAN Requests. Enable the Block WAN Request feature by checking the box beside Block Anonymous Internet Requests and you can prevent your network from being “pinged,” or detected, by other Internet users. The Block WAN Request feature also reinforces your network security by hiding your network ports. Both functions of the Block WAN Request feature make it more difficult for outside users to work their way into your network. This feature is enabled by default. Select Disabled to allow anonymous Internet requests.

Filter Multicast. Multicasting allows for multiple transmissions to specific recipients at the same time. If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers. Select Enabled to filter multicasting, or Disabled to disable this feature.

Filter Internet NAT Redirection. This feature uses port forwarding to block access to local servers from local networked computers. Select Enabled to filter Internet NAT redirection, or Disabled to disable this feature.

Filter IDENT (Port 113). This feature keeps port 113 from being scanned by devices outside of your local network. Select Enabled to filter port 113, or Disabled to disable this feature.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Security Tab - VPN Passthrough

Use the settings on this tab to allow VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router’s firewall.

IPSec Pass-through. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, click Enable. IPSec Pass-Through is enabled by default.

PPTP Pass-through. Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, click Enable. PPTP Pass-Through is enabled by default.

L2TP Pass-through. Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, click Enable. L2TP Pass-Through is enabled by default.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Access Restrictions Tab - Internet Access

The Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, websites, and inbound traffic during specific days and times.

Internet Access Policy. Access can be managed by a policy. Use the settings on this screen to establish an access policy (after the Save Settings button is clicked). Selecting a policy from the drop-down menu will display that policy’s settings. To delete a policy, select that policy’s number and click the Delete button. To view all the policies, click the Summary button. (Policies can be deleted from the Summary screen by selecting the policy or policies and clicking the Delete button. To return to the Internet Access tab, click the Close button.)

Status. Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and select Enable.

To create an Internet Access policy:

  1. Select a number from the Internet Access Policy drop-down menu.

  2. To enable this policy, select Enable.

  3. Enter a Policy Name in the field provided.

    1. Click the Edit List of PC’s button to select which PCs will be affected by the policy. The List of PCs screen will appear. You can select a PC by MAC Address or IP Address. You can also enter a range of IP Addresses if you want this policy to affect a group of PCs. After making your changes, click the Save Settings button to apply

    2. your changes or Cancel Changes to cancel your changes. Then click the Close button.
  4. Click the appropriate option, Deny or Allow, depending on whether you want to block or allow Internet access for the PCs you listed on the List of PCs screen.

  5. Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours.

Figure 6-31: Internet Policy Summary

Blocked Services You can filter access to various services accessed over the Internet, such as FTP or telnet, by selecting services from the drop-down menus next to Blocked Services. (You can block up to 20 services.) Then enter the range of ports you want to filter. If the service you want to block is not listed or you want to edit a service’s settings, then click the Add/ Edit Service button. Then the Port Services screen will appear. To add a service, enter the service’s name in the Service Name field. Select its protocol from the Protocol drop-down menu, and enter its range in the Port Range fields. Then click the Add button. To modify a service, select it from the list on the right. Change its name, protocol setting, or port range. Then click the Modify button. To delete a service, select it from the list on the right. Then click the Delete button. When you are finished making changes on the Port Services screen, click the Apply button to save

changes. If you want to cancel your changes, click the Cancel button. To close the Port Services screen and return to the Access Restrictions screen, click the Close button. Website Blocking by URL Address If you want to block websites with specific URL addresses, enter each URL in a separate field next to

Website Blocking by URL Address. Website Blocking by Keyword If you want to block websites using specific keywords, enter each keyword in a separate field next to

Website Blocking by Keyword. Click the Save Settings button to save the policy’s settings. To cancel the policy’s settings, click the Cancel Changes button.

The Applications and Gaming Tab - Port Range Forward

The Applications and Gaming Tab allows you to set up public services on your network, such as web servers, ftp servers, e-mail servers, or other specialized Internet applications. (Specialized Internet applications are any applications that use Internet access to perform functions such as videoconferencing or online gaming. Some Internet applications may not require any forwarding.)

To forward a port, enter the information on each line for the criteria required. The criteria are described here. Application. In this field, enter the name you wish to give the application. Each name can be up to 12 characters. Start/End. This is the port range. Enter the number that starts the port range under Start and the number that

ends the range under End. Protocol. Enter the protocol used for this application, either TCP or UDP, or Both. IP Address. For each application, enter the IP Address of the PC running the specific application. Enable. Click the Enable checkbox to enable port forwarding for the relevant application. Change these settings as described here and click the Save Settings button to apply your changes or Cancel

Changes to cancel your changes.

The Applications & Gaming Tab - Port Triggering

The Port Triggering screen allows the Router to watch outgoing data for specific port numbers. The IP address of the computer that sends the matching data is remembered by the Router, so that when the requested data returns through the Router, the data is pulled back to the proper computer by way of IP address and port mapping rules.

Port Triggering Application. Enter the application name of the trigger. Triggered Range For each application, list the triggered port number range. Check with the Internet application documentation for

the port number(s) needed. Start Port. Enter the starting port number of the Triggered Range. End Port. Enter the ending port number of the Triggered Range.

Forwarded Range

For each application, list the forwarded port number range. Check with the Internet application documentation for the port number(s) needed. Start Port. Enter the starting port number of the Forwarded Range. End Port. Enter the ending port number of the Forwarded Range. Enable. Click the Enable check box to enable port triggering for the relevant application. Change these settings as described here and click the Save Settings button to apply your changes or Cancel

Changes to cancel your changes.

The Applications and Gaming Tab - DMZ

The DMZ feature allows one network user to be exposed to the Internet for use of a special-purpose service such as Internet gaming or videoconferencing. DMZ hosting forwards all the ports at the same time to one PC. The Port Range Forward feature is more secure because it only opens the ports you want to have opened, while DMZ hosting opens all the ports of one computer, exposing the computer to the Internet.

Any PC whose port is being forwarded must have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function.

To expose one PC, select Enable. Then, enter the computer's IP address in the DMZ Host IP Address field.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Applications and Gaming Tab - QoS

Quality of Service (QoS) ensures better service to high-priority types of network traffic, which may involve demanding, real-time applications, such as videoconferencing and gaming.

Wired QoS

There are three types of QoS available, Device Priority, Ethernet Port Priority and Application Priority.

Enable/Disable. To enable Wired QoS, select Enable. Otherwise, select Disable.

Upstream Bandwidth. Select Auto or Manual from the drop-down menu. Manual allows you to specify the maximum outgoing bandwidth that applications can utilize.

Device Priority

Enter the name of your network device in the Device name field, select its priority from the drop-down menu and enter its MAC Address.

Ethernet Port Priority

Ethernet Port Priority QoS allows you to prioritize performance for four of the Router’s ports, LAN Ports 1-4. For each of these ports, select High or Low for Priority. The Router’s four ports have been assigned low priority by default. For Flow Control, if you want the Router to control the transmission of data between network devices, select Enable. To disable this feature, select Disable.

Ethernet Port Priority QoS does not require support from your ISP because the prioritized ports are LAN ports (1-4) in your network.

Application Port Priority

Application Port Priority QoS manages information as it is transmitted and received. Depending on the settings of the QoS screen, this feature will assign information a high or low priority for the applications that you specify.

Optimize Gaming Applications. Check this box to automatically allow common game application ports to have a higher priority. These games include, but are not limited to: Counter-Strike, Half-Life, Age of Empires, Everquest, Quake2/Quake3 and Diablo II. The default setting is unchecked.

Application Name. Enter the name you wish to give the application.

Priority. Select High or Low to assign priority to the application.

Specific Port #. Enter the port number for the application.

Wireless QoS

WMM Support. Wi-Fi Multimedia (WMM), formerly known as Wireless Multimedia Extensions (WME), is a Wi-Fi Alliance certified feature, based on the IEEE 802.11e draft standard. This feature provides Quality of Service (QoS) to wireless networks. It is especially suitable for voice, music and video applications; for examples, Voice over IP (VoIP), video streaming and interactive gaming. If you have other devices on your wireless network that support WMM, select Enable. Otherwise, keep the default, Disable.

No Acknowledgement. If you want to disable the Router’s Acknowledgement feature, so that the Router will not re-send data if an error occurs select Enable. Otherwise, keep the default, Disable.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Administration Tab - Management

This section of the Administration tab allows the network’s administrator to manage specific Router functions for access and security.

Local Router Access. You can change the Router’s password from here. Enter a new Router password and then type it again in the Re-enter to confirm field to confirm.

Web Access. HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World Wide Web. HTTPS - Uses SSL (Secured Socket Layer) to encrypt data transmitted for higher security. Select HTTP or HTTPS. Wireless Access Web - If you are using your Wireless Router in a public domain where you are giving wireless access to your guests, you can disable wireless access to the router’s web-based utility. You will only be able to access the web-based utility via a wired connection if you disable the setting. Select Enable to enable wireless access to the Router’s web-based utility or Disable to disable wireless access to the utility.

Remote Router Access. To access the Router remotely, from outside the network, select Enable. Then, enter the port number that will be open to outside access. You will need to enter the Router’s password when accessing the Router this way, as usual.

UPnP. Select Enable to use the UPnP feature, select Disable otherwise. The default setting is Enable.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Administration Tab - Log

The Router can keep logs of all traffic for your Internet connection. To disable the Log function, keep the default setting, Disable. To monitor traffic between the network and the Internet, select Enable. When you wish to view the logs, click Incoming Log or Outgoing Log, depending on which you wish to view.

Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.

The Administration Tab - Diagnostics

The diagnostic tests (Ping and Traceroute) allow you to check the connections of your network components.

Ping Test. The Ping test will check the status of a connection. Click the Ping button to open the Ping Test screen. Enter the address of the PC whose connection you wish to test and how many times you wish to test it. Then, click the Ping button. The Ping Test screen will then display the test results. To stop the test, click the Stop button. Click the Clear Log button to clear the screen. Click the Close button to return to the Diagnostics screen.

Traceroute Test. To test the performance of a connect, click the Traceroute button. Enter the address of the PC whose connection you wish to test and click the Traceroute button. The Traceroute screen will then display the

test results. To stop the test, click the Stop button. Click the Clear Log button to clear the screen. Click the Close button to return to the Diagnostics screen.

The Administration Tab - Factory Defaults

Select the Yes button and then click the Save Settings button to reset all configuration settings to their default values. Any settings you have saved will be lost when the default settings are restored.

The Administration Tab - Firmware Upgrade

Firmware can be upgraded by clicking the Upgrade button after browsing for the firmware, which you can download from the Linksys website. Do not upgrade your firmware unless you are experiencing problems with the Router. For more information about upgrading firmware, refer to “Appendix C: Upgrading Firmware”.

The Administration Tab - Config Management

This screen is used to back up or restore the Router’s configuration file. To back up the Router’s configuration file, click the Backup button. Then follow the on-screen instructions. To restore the Router’s configuration file, click the Browse button to locate the file, and follow the on-screen

instructions. After you have selected the file, click the Restore button.

The Status Tab - Router

The Router screen on the Status Tab displays the Router’s current status. Firmware Version. This is the Router’s current firmware. Current Time. This shows the time, as you set on the Setup Tab. MAC Address. This is the Router’s MAC Address, as seen by your ISP. Router Name. This is the specific name for the Router, which you set on the Setup Tab. Host Name. If required by your ISP, this would have been entered on the Setup Tab. Domain Name. If required by your ISP, this would have been entered on the Setup Tab. Configuration Type. This section shows the current network information stored in the router. Information being

shown depends on the Internet Connection type you had entered under the Setup Tab.

The Status Tab - Local Network

The Local Network screen on the Status Tab displays the status of your network. MAC Address. This is the Router’s MAC Address, as seen on your local, Ethernet network. IP Address. This shows the Router’s IP Address, as it appears on your local, Ethernet network. Subnet Mask. This displays the current subnet mask being configured for your local network. DHCP Server. If you are using the Router as a DHCP server, that will be displayed here. Start IP Address. For the range of IP Addresses used by devices on your local, Ethernet network, the beginning

of that range is shown here.

End IP Address. For the range of IP Addresses used by devices on your local, Ethernet network, the end of that range is shown here. DHCP Clients Table. Clicking this button will open a screen to show you which PCs are utilizing the Router as a

DHCP server. You can delete PCs from that list, and sever their connections, by checking a Delete box and clicking the Delete button.

The Status Tab - Wireless

The Wireless screen on the Status Tab displays the status of your wireless network. MAC Address. This is the Router’s MAC Address, as seen on your local, wireless network. Mode. As selected from the Wireless tab, this will display the wireless mode (Mixed, G-Only, or Disabled) used by

the network. SSID. As entered on the Wireless tab, this will display the wireless network name or SSID. DHCP Server. If you are using the Router as a DHCP server, that will be displayed here. Channel. As entered on the Wireless tab, this will display the channel on which your wireless network is

broadcasting. Encryption Function. As selected on the Security Tab, this will display what type of encryption the Router uses for security.

Chapter 6: Configuring the Wireless-G Broadband Router The Status Tab - Local Network

Appendix A: Troubleshooting

This appendix consists of two parts: “Common Problems and Solutions” and “Frequently Asked Questions.” Provided are possible solutions to problems that may occur during the installation and operation of the Router. Read the descriptions below to help you solve your problems. If you can’t find an answer here, check the Linksys website at www.linksys.com.

Common Problems and Solutions

1. I’m trying to access the Router’s Web-based Utility, but I do not see the login screen. Instead, I see a screen saying, “404 Forbidden.”

If you are using Windows Explorer, perform the following steps until you see the Web-based Utility’s login

screen (Netscape Navigator will require similar steps):

  1. Click File. Make sure Work Offline is NOT checked.

  2. Press CTRL + F5. This is a hard refresh, which will force Windows Explorer to load new webpages, not cached ones.

  3. Click Tools. Click Internet Options. Click the Security tab. Click the Default level button. Make sure the security level is Medium or lower. Then click the OK button.

2. I need to set a static IP address on a PC.

You can assign a static IP address to a PC by performing the following steps:

3. I want to test my Internet connection.

A Check your TCP/IP settings. For Windows 98SE, Me, 2000, and XP:

4. I am not getting an IP address on the Internet with my Internet connection.

5. I am not able to access the Setup page of the Router’s web-based utility.

6. I need to set up a server behind my Router and make it available to the public. To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed.

Follow these steps to set up port forwarding through the Router’s web-based utility. We will be setting up web, ftp, and mail servers.

  1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forward tab.

  2. Enter any name you want to use for the Application.

  3. Enter the Start and End Port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80.

  4. Select the protocol(s) you will be using, TCP and/or UDP.

  5. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Check “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.

  6. Check the Enable option for the port services you want to use. Consider the example below:

Application Start and End Protocol IP Address Enabled
Web server 80 to 80 Both 192.168.1.100 X
FTP server 21 to 21 TCP 192.168.1.101 X
SMTP (outgoing) 25 to 25 Both 192.168.1.102 X
POP3 (incoming) 110 to 110 Both 192.168.1.102 X

When you have completed the configuration, click the Save Settings button.

Appendix A: Troubleshooting Common Problems and Solutions

7. I need to set up online game hosting or use other Internet applications. If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application. This would require you to set up the Router to deliver incoming packets or data to a specific computer. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use. Follow these steps to set up online game hosting or use a certain Internet application:

  1. Access the Router’s web interface by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forward tab.

  2. Enter any name you want to use for the Application.

  3. Enter the Start and End Port range of the service you are using. For example, if you want to host Unreal Tournament (UT), you would enter the range 7777 to 27900.

  4. Select the protocol(s) you will be using, TCP and/or UDP.

  5. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Check “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.

  6. Check the Enable option for the port services you want to use. Consider the example below:

Application Start and End Protocol IP Address Enabled
UT 7777 to 27900 Both 192.168.1.100 X
Halflife 27015 to 27015 Both 192.168.1.105 X
PC Anywhere 5631 to 5631 UDP 192.168.1.102 X
VPN IPSEC 500 to 500 UDP 192.168.1.100 X

When you have completed the configuration, click the Save Settings button.

8. I can’t get the Internet game, server, or application to work. If you are having difficulties getting any Internet game, server, or application to function properly, consider exposing one PC to the Internet using DeMilitarized Zone (DMZ) hosting. This option is available when an application requires too many ports or when you are not sure which port services to use. Make sure you disable all the forwarding entries if you want to successfully use DMZ hosting, since forwarding has priority over DMZ hosting. (In other words, data that enters the Router will be checked first by the forwarding settings. If the port number that the data enters from does not have port forwarding, then the Router will send the data to whichever PC or network device you set for DMZ hosting.)

Follow these steps to set DMZ hosting:

  1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forward tab.

  2. Disable or remove the entries you have entered for forwarding. Keep this information in case you want to use it at a later time.

  3. Go to the Applications & Gaming => DMZ tab.

  4. Select Enable next to DMZ. In the Client PC IP Address field, enter the IP address of the computer you want exposed to the Internet. This will bypass the NAT technology for that computer. Please refer to “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.

  5. Once completed with the configuration, click the Save Settings button.

9. I forgot my password, or the password prompt always appears when I am saving settings to the Router. Reset the Router to factory default by pressing the Reset button for 10 seconds and then releasing it. If you are still getting prompted for a password when saving settings, then perform the following steps:

  1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Enter the default password admin, and click the Administration => Management tab.

  2. Enter a different password in the Router Password field, and enter the same password in the second field to confirm the password.

  3. Click the Save Settings button.

10.I am a PPPoE user, and I need to remove the proxy settings or the dial-up pop-up window. If you have proxy settings, you need to disable these on your computer. Because the Router is the gateway for the Internet connection, the computer does not need any proxy settings to gain access. Please follow these directions to verify that you do not have any proxy settings and that the browser you use is set to connect directly to the LAN.

11.To start over, I need to set the Router to factory default. Hold the Reset button for 10 seconds and then release it. This will return the password, forwarding, and other settings on the Router to the factory default settings. In other words, the Router will revert to its original factory configuration.

12.I need to upgrade the firmware. In order to upgrade the firmware with the latest features, you need to go to the Linksys website and download the latest firmware at www.linksys.com. Follow these steps:

  1. Go to the Linksys website at http://www.linksys.com and download the latest firmware.

  2. To upgrade the firmware, follow the steps in “Appendix C: Upgrading Firmware.”

13.The firmware upgrade failed, and/or the Power LED is flashing. The upgrade could have failed for a number of reasons. Follow these steps to upgrade the firmware and/or make the Power LED stop flashing:

14. My DSL service’s PPPoE is always disconnecting. PPPoE is not actually a dedicated or always-on connection. The DSL ISP can disconnect the service after a period of inactivity, just like a normal phone dial-up connection to the Internet.

15. I can’t access my e-mail, web or I am getting corrupted data from the Internet. The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set at 1500. For most DSL users, it is strongly recommended to use MTU 1492.

16. The Power LED keeps flashing. The Power LED flashes when the device is first powered up. Meantime, the system will boot up itself and check for proper operation. After finishing the checking procedure, the LED stays solid to show that the system is working fine. If the LED keeps flashing after this time, the device is not working properly. Try to flash the firmware by assigning a static IP address to the computer, and then upgrade the firmware. Try using the following settings, IP Address: 192.168.1.50 and Subnet Mask: 255.255.255.0.

17.When I enter a URL or IP address, I get a time-out error or am prompted to retry.

Frequently Asked Questions

After using SecureEasySetup, my existing wireless devices can no longer connect to the Router.

SecureEasySetup uses WPA-Personal encryption. If your current wireless devices do not support WPA-Personal security, then you cannot use SecureEasySetup on your network. You will need to manually configure your network security using the encryption supported by your existing devices. Re-run the Setup Wizard. On the Welcome screen for the Setup Wizard, click Click Here to Start and follow the on-screen instructions. On the Configure Wireless Settings screen, click Enter Wireless Settings Manually and continue to follow the on-screen instructions. For more information, refer to “Chapter 5: Setting up the Wireless-G Broadband Router.”

How do I set up additional devices using SecureEasySetup?

Repeat the SecureEasySetup process for each device until all of your devices have been configured.

Where is my SecureEasySetup button?

On the Router, the SecureEasySetup button is located on the front panel. The button should be lighted either orange or white. For other SecureEasySetup devices, refer to each wireless device's documentation to locate the button on that device.

I have devices that support WPA-Personal security, but do not have SecureEasySetup. Can I still use SecureEasySetup?

Yes. Print out the wireless security settings at the end of the SecureEasySetup process, and then manually configure the settings for your non-SecureEasySetup devices. Refer to each wireless device’s documentation for instructions on how to enter these settings.

What is the maximum number of IP addresses that the Router will support?

The Router will support up to 253 IP addresses.

Is IPSec Pass-Through supported by the Router?

Yes, it is a built-in feature that the Router automatically enables.

Where is the Router installed on the network?

In a typical environment, the Router is installed between the cable/DSL modem and the LAN. Plug the Router into the cable/DSL modem’s Ethernet port.

Does the Router support IPX or AppleTalk?

No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications. IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a communications protocol used on Apple and Macintosh networks, can be used for LAN to LAN connections, but those protocols cannot connect from the Internet to a LAN.

Does the Internet connection of the Router support 100Mbps Ethernet?

The Router’s current hardware design supports up to 100Mbps Ethernet on its Internet port; however, the Internet connection speed will vary depending on the speed of your broadband connection. The Router also supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the Router.

What is Network Address Translation and what is it used for?

Network Address Translation (NAT) translates multiple IP addresses on the private LAN to one public address that is sent out to the Internet. This adds a level of security since the address of a PC connected to the private LAN is never transmitted on the Internet. Furthermore, NAT allows the Router to be used with low cost Internet accounts, such as DSL or cable modems, when only one TCP/IP address is provided by the ISP. The user may have many private addresses behind this single address provided by the ISP.

Does the Router support any operating system other than Windows 98SE, Windows Millennium, Windows 2000, or Windows XP?

Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems.

Does the Router support ICQ send file?

Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the Router.

I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do?

If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can also use a port forwarding range of 7777 ~ 27900. If you want to use the UT Server Admin, forward another port. (Port 8080 usually works well but is used for remote admin. You may have to disable this.) Then in the [UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and ServerName to the IP assigned to the Router from your ISP.

Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP address?

It depends on which network game or what kind of game server you are using. For example, Unreal Tournament supports multi-login with one public IP.

How do I get Half-Life: Team Fortress to work with the Router?

The default client port for Half-Life is 27005. The computers on your LAN need to have “+clientport 2700x” added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at the same time, even if on the same LAN (not a problem with 1.0.1.3). As far as hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.

How can I block corrupted FTP downloads?

If you are experiencing corrupted files when you download a file with your FTP client, try using another FTP program.

The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the screen. What do I need to do?

Force your Ethernet adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of your Ethernet adapter as a temporary measure. (Please look at the Network Control Panel in your Ethernet adapter’s Advanced Properties tab.) Make sure that your proxy setting is disabled in the browser. Check our website at www.linksys.com for more information.

If all else fails in the installation, what can I do?

Reset the Router by holding down the reset button until the Power LED fully turns on and off. Reset your cable or DSL modem by powering the unit off and then on. Obtain and flash the latest firmware release that is readily available on the Linksys website, www.linksys.com.

How will I be notified of new Router firmware upgrades?

All Linksys firmware upgrades are posted on the Linksys website at www.linksys.com, where they can be downloaded for free. To upgrade the Router’s firmware, use the Administration - Firmware Upgrade tab of the Router’s web-based utility. If the Router’s Internet connection is working well, there is no need to download a newer firmware version, unless that version contains new features that you would like to use. Downloading a more current version of Router firmware will not enhance the quality or speed of your Internet connection, and may disrupt your current connection stability.

Will the Router function in a Macintosh environment?

Yes, but the Router’s setup pages are accessible only through Internet Explorer 4.0 or Netscape Navigator 4.0 or higher for Macintosh.

I am not able to get the web configuration screen for the Router. What can I do?

You may have to remove the proxy settings on your Internet browser, e.g., Netscape Navigator or Internet Explorer. Or remove the dial-up settings on your browser. Check with your browser documentation, and make sure that your browser is set to connect directly and that any dial-up is disabled. Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit, Preferences, Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection to the Internet.

What is DMZ Hosting?

Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet. Some applications require multiple TCP/IP ports to be open. It is recommended that you set your computer with a static IP if you want to use DMZ Hosting. To get the LAN IP address, see “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter.”

If DMZ Hosting is used, does the exposed user share the public IP with the Router?

No.

Does the Router pass PPTP packets or actively route PPTP sessions?

The Router allows PPTP packets to pass through.

Is the Router cross-platform compatible?

Any platform that supports Ethernet and TCP/IP is compatible with the Router.

How many ports can be simultaneously forwarded?

Theoretically, the Router can establish 520 sessions at the same time, but you can only forward 10 ranges of ports.

What are the advanced features of the Router?

The Router’s advanced features include advanced wireless settings, filters, access restriction policies, port forwarding, advanced routing, and DDNS.

How do I get mIRC to work with the Router?

Under the Port Forwarding tab, set port forwarding to 113 for the PC on which you are using mIRC.

Can the Router act as my DHCP server?

Yes. The Router has DHCP server software built-in.

Can I run an application from a remote computer over the wireless network?

This will depend on whether or not the application is designed to be used over a network. Consult the application’s documentation to determine if it supports operation over a network.

What is the IEEE 802.11g standard?

It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard. The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz.

What is the IEEE 802.11b standard?

It is one of the IEEE standards for wireless networks. The 802.11b standard allows wireless networking hardware from different manufacturers to communicate, provided that the hardware complies with the 802.11b standard. The 802.11b standard states a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz.

What IEEE 802.11g features are supported?

The product supports the following IEEE 802.11g functions:

What IEEE 802.11b features are supported?

The product supports the following IEEE 802.11b functions:

What is ad-hoc mode?

When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to communicate directly with each other. The ad-hoc wireless network will not communicate with any wired network.

What is infrastructure mode?

When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with a wired network through a wireless access point.

What is roaming?

Roaming is the ability of a portable computer user to communicate continuously while moving freely throughout an area greater than that covered by a single access point. Before using the roaming function, the workstation must make sure that it is the same channel number with the access point of dedicated coverage area.

To achieve true seamless connectivity, the wireless LAN must incorporate a number of different functions. Each node and access point, for example, must always acknowledge receipt of each message. Each node must maintain contact with the wireless network even when not actually transmitting data. Achieving these functions simultaneously requires a dynamic RF networking technology that links access points and nodes. In such a system, the user’s end node undertakes a search for the best possible access to the system. First, it evaluates such factors as signal strength and quality, as well as the message load currently being carried by each access point and the distance of each access point to the wired backbone. Based on that information, the node next selects the right access point and registers its address. Communications between end node and host computer can then be transmitted up and down the backbone.

As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in touch with the original access point or whether it should seek a new one. When a node no longer receives acknowledgment from its original access point, it undertakes a new search. Upon finding a new access point, it then re-registers, and the communication process continues.

What is ISM band?

The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe.

What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).

What is DSSS? What is FHSS? And what are their differences?

Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.

What is WEP?

WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as described in the IEEE 802.11 standard.

What is a MAC Address?

The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for the network.

How do I reset the Router?

Press the Reset button on the back panel for about five seconds. This will reset the Router to its default settings.

How do I resolve issues with signal loss?

There is no way to know the exact range of your wireless network without testing. Every obstacle placed between the Router and a wireless PC will create signal loss. Lead glass, metal, concrete floors, water and walls will inhibit the signal and reduce range. Start with the Router and your wireless PC in the same room and move it away in small increments to determine the maximum range in your environment.

You may also try using different channels, as this may eliminate interference affecting only one channel.

I have excellent signal strength, but I cannot see my network.

Wireless security is probably enabled on the Router, but not on your wireless adapter (or vice versa). Verify that the same wireless security method and passphrase/keys are being used on all devices of your wireless network.

How many channels/frequencies are available with the Router?

There are eleven available channels, ranging from 1 to 11, in North America. There may be additional channels available in other regions, subject to the regulations of your region and/or country.

If your questions are not addressed here, refer to the Linksys website, www.linksys.com.

Appendix B: Wireless Security

Linksys wants to make wireless networking as safe and easy for you as possible. The current generation of Linksys products provide several network security features, but they require specific action on your part for implementation. So, keep the following in mind whenever you are setting up or using your wireless network.

Security Precautions

The following is a complete list of security precautions to take (as shown in this User Guide) (at least steps 1 through 5 should be followed):

  1. Change the default SSID.

  2. Disable SSID Broadcast.

  3. Change the default password for the Administrator account.

  4. Enable MAC Address Filtering.

  5. Change the SSID periodically.

  6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce your network performance.

  7. Change the WEP encryption keys periodically.

To ensure network security, steps one through five should be followed, at least.

Security Threats Facing Wireless Networks

Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking products first listen for “beacon messages”. These messages can be easily decrypted and contain much of the network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:

Change the administrator’s password regularly. With every wireless networking device you use, keep in mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the only person who can change network settings. If a hacker gets a hold of the administrator’s password, he, too, can change those settings. So, make it harder for a hacker to get that information. Change the administrator’s password regularly.

Appendix B: Wireless Security Security Precautions

Note: Some of these security features are available only through the network router or access point. Refer to the router or access point’s documentation for more information.

SSID. There are several things to keep in mind about the SSID:

  1. Disable Broadcast

  2. Make it unique

  3. Change it often

Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast the SSID.

Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is “linksys”.) Hackers know these defaults and can check these against your network. Change your SSID to something unique and not something related to your company or the networking products you use.

Change your SSID regularly so that any hackers who have gained access to your wireless network will have to start from the beginning in trying to break in.

MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address.

WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job more difficult.

There are several ways that WEP can be maximized:

  1. Use the highest level of encryption possible

  2. Use “Shared Key” authentication

  3. Change your WEP key regularly

WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Two modes are available: Pre-Shared Key and RADIUS. Pre-Shared Key gives you a choice of two encryption methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates Message Integrity Code (MIC) to provide protection against hackers, and AES (Advanced Encryption System), which utilizes a symmetric 128-Bit block data encryption. RADIUS (Remote Authentication Dial-In User Service) utilizes a RADIUS server for authentication and the use of dynamic TKIP, AES, or WEP.

Important: Always remember that each device in your wireless network MUST use the same encryption method and encryption key or your wireless network will not function properly.

WPA Pre-Shared Key. If you do not have a RADIUS server, select the type of algorithm, TKIP or AES, enter a password in the Pre-Shared key field of 8-64 characters, and enter a Group Key Renewal period time between 0 and 99,999 seconds, which instructs the Router or other device how often it should change the encryption keys.

WPA RADIUS. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router or other device.) First, select the type of WPA algorithm, TKIP or AES. Enter the RADIUS server’s IP Address and port number, along with a key shared between the device and the server. Last, enter a Group Key Renewal period, which instructs the device how often it should change the encryption keys.

RADIUS. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router or other device.) First, enter the RADIUS server’s IP Address and port number, along with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption, and either generate a WEP key through the Passphrase or enter the WEP key manually.

Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting sensitive data over your network, encryption should be used.

These security recommendations should help keep your mind at ease while you are enjoying the most flexible and convenient technology Linksys has to offer.

NOTE: The maximum performance for wireless is derived from IEEE Standard 802.11 specifications. Actual performance can vary, including lower wireless network capacity, data throughput rate, range and coverage. Performance depends on many factors, conditions and variables, including distance from the access point, volume of network traffic, building materials and construction, operating system used, mix of wireless products used, interference and other adverse conditions.

Appendix C: Upgrading Firmware

The Router's firmware is upgraded through the Web-based Utility's Administration tab. Follow these instructions:

  1. Download the firmware from Linksys's website at www.linksys.com.

  2. Extract the firmware file on your computer.

  3. Open the Router’s Web-based Utility, and click the Administration tab.

  4. Click Firmware Upgrade, and the Upgrade Firmware screen will appear.

  5. Enter the location of the firmware's file or click the Browse button to find the file.

Figure C-1: Upgrade Firmware

6. Then click the Upgrade button and follow the on-screen instructions.

Appendix C: Upgrading Firmware

Appendix D: Windows Help

Almost Linksys wireless products require Microsoft Windows. Windows is the most used operating system in the world and comes with many features that help make networking easier. These features can be accessed through Windows Help and are described in this appendix.

TCP/IP

Before a computer can communicate with the Router, TCP/IP must be enabled. TCP/IP is a set of instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well. Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides complete instructions on enabling TCP/IP.

Shared Resources

If you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on utilizing shared resources.

Network Neighborhood/My Network Places

Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the version of Windows you're running). Windows Help provides complete instructions on adding PCs to your network.

Appendix D: Windows Help

Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter

This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering and/or MAC address cloning feature of the Router. You can also find the IP address of your computer’s Ethernet adapter. This IP address is used for the Router’s filtering, forwarding, and/or DMZ features. Follow the steps in this appendix to find the adapter’s MAC or IP address in Windows 98, Me, 2000, or XP.

Windows 98SE or Me Instructions

  1. Click Start and Run. In the Open field, enter winipcfg. Then press the Enter key or the OK button.

  2. When the IP Configuration screen appears, select the Ethernet adapter you have connected to the Router via a CAT 5 Ethernet network cable. See Figure E-1.

  3. Write down the Adapter Address as shown on your computer screen (see Figure E-2). This is the MAC address for your Ethernet adapter and is shown as a series of numbers and letters.

The MAC address/Adapter Address is what you will use for MAC address cloning or MAC filtering.

The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may

show something different.

Note: The MAC address is also called the Adapter Address.

Windows 2000 or XP Instructions

  1. Click Start and Run. In the Open field, enter cmd. Press the Enter key or click the OK button.

  2. At the command prompt, enter ipconfig /all. Then press the Enter key.

  3. Write down the Physical Address as shown on your computer screen (Figure E-3); it is the MAC address for your Ethernet adapter. This appears as a series of numbers and letters.

The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering. Note: The MAC address is also called the Physical Address.

The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may show something different.

For the Router’s Web-based Utility

For MAC filtering, enter the 12-digit MAC address in this format, XXXXXXXXXXXX, WITHOUT the hyphens. See Figure E-4.

For MAC address cloning, enter the 12-digit MAC address in the MAC Address fields provided, two digits per field. See Figure E-5.

Appendix F: Glossary

802.11b - A wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an

operating frequency of 2.4GHz. 802.11g - A wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an operating frequency of 2.4GHz, and backward compatibility with 802.11b devices.

Access Point - A device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network.

Adapter - A device that adds network functionality to your PC. Ad-hoc - A group of wireless devices communicating directly with each other (peer-to-peer) without the use of an access point.

AES (Advanced Encryption Standard) - A security method that uses symmetric 128-bit block data encryption.

Backbone - The part of a network that connects most of the systems and networks together, and handles the most data. Bandwidth - The transmission capacity of a given device or network. Beacon Interval - Data transmitted on your wireless network that keeps the network synchronized. Bit - A binary digit. Boot - To start a device and cause it to start executing instructions. Bridge - A device that connects different networks. Broadband - An always-on, fast Internet connection. Browser - An application program that provides a way to look at and interact with all the information on the

World Wide Web.

Buffer - A shared or assigned memory area that is used to support and coordinate different computing and networking activities so one isn't held up by the other. Byte - A unit of data that is usually eight bits long

Appendix F: Glossary

Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the

Internet. CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer that is used to prevent data collisions.

CTS (Clear To Send) - A signal sent by a wireless device, signifying that it is ready to receive data. Daisy Chain - A method used to connect devices in a series, one after the other. Database - A collection of data that is organized so that its contents can easily be accessed, managed, and

updated.

DDNS (Dynamic Domain Name System) - Allows the hosting of a website, FTP server, or e-mail server with a fixed domain name (e.g., www.xyz.com) and a dynamic IP address. Default Gateway - A device that forwards Internet traffic from your local area network. DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows administrators to assign

temporary IP addresses to network computers by “leasing” an IP address to a user for a limited amount of time,

instead of assigning permanent IP addresses. DMZ (Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be “seen” from the Internet.

DNS (Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP addresses. Domain - A specific name for a network of computers. Download - To receive a file transmitted over a network.

DSL (Digital Subscriber Line) - An always-on broadband connection over traditional phone lines. DSSS (Direct-Sequence Spread-Spectrum) - Frequency transmission with a redundant bit pattern resulting in a lower probability of information being lost in transit.

DTIM (Delivery Traffic Indication Message) - A message included in data packets that can increase wireless efficiency. Dynamic IP Address - A temporary IP address assigned by a DHCP server.

Appendix F: Glossary

EAP (Extensible Authentication Protocol) - A general authentication protocol used to control network access.

Many specific authentication methods work within this framework. EAP-PEAP (Extensible Authentication Protocol-Protected Extensible Authentication Protocol) - A mutual authentication method that uses a combination of digital certificates and another system, such as passwords.

EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) - A mutual authentication method that uses digital certificates.

Encryption - Encoding data transmitted in a network. Ethernet - A networking protocol that specifies how data is placed on and retrieved from a common transmission medium.

Finger - A program that tells you the name associated with an e-mail address.

Firewall - A set of related programs located at a network gateway server that protects the resources of a network from users from other networks. Firmware - The programming code that runs a networking device. Fragmentation -Breaking a packet into smaller units when transmitting over a network medium that cannot

support the original size of the packet. FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network. Full Duplex - The ability of a networking device to receive and transmit data simultaneously. Gateway - A device that interconnects networks with different, incompatible communications protocols. Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a

time. Hardware - The physical aspect of computers, telecommunications, and other information technology devices. HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World

Wide Web. Infrastructure - A wireless network that is bridged to a wired network via an access point. IP (Internet Protocol) - A protocol used to send data over a network. IP Address - The address used to identify a computer or device on a network.

Appendix F: Glossary

IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device. IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer. ISM band - Radio bandwidth utilized in wireless transmissions. ISP (Internet Service Provider) - A company that provides access to the Internet. LAN (Local Area Network) - The computers and networking products that make up your local network. LEAP (Lightweight Extensible Authentication Protocol) - A mutual authentication method that uses a username

and password system.

MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking device. Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission. mIRC - An Internet Relay Chat program that runs under Windows. Multicasting - Sending data to a group of destinations at once. NAT (Network Address Translation) - NAT technology translates IP addresses of a local area network to a different

IP address for the Internet.

Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users. NNTP (Network News Transfer Protocol) - The protocol used to connect to Usenet groups on the Internet. Node - A network junction or connection point, typically a computer or work station. OFDM (Orthogonal Frequency Division Multiplexing) - Frequency transmission that separates the data stream

into a number of lower-speed data streams, which are then transmitted in parallel to prevent information from being lost in transit.

Packet - A unit of data sent over a network. Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically generating the WEP encryption keys for Linksys products.

PEAP (Protected Extensible Authentication Protocol) - A mutual authentication method that uses a combination of digital certificates and another system, such as passwords.

Appendix F: Glossary

Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online. POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet. Port - The connection point on a computer or networking device used for plugging in cables or adapters. Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power. PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication

(username and password) in addition to data transport.

PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe. Preamble - Part of the wireless signal that synchronizes network traffic. RADIUS (Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control

network access. RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires. Roaming - The ability to take a wireless device from one access point's range to another without losing the

connection. Router - A networking device that connects multiple networks together. RTS (Request To Send) - A networking method of coordinating large packets through the RTS Threshold setting. Server - Any computer whose function in a network is to provide user access to files, printing, communications,

and other services. SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet. SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol. Software - Instructions for the computer. A series of instructions that performs a particular task is called a

“program”. SOHO (Small Office/Home Office) - Market segment of professionals who work at home or in small offices. SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before

allowing them to enter the network.

Appendix F: Glossary

Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission. SSID (Service Set IDentifier) - Your wireless network's name. Static IP Address - A fixed address assigned to a computer or device that is connected to a network. Static Routing - Forwarding data in a network via a fixed path. Subnet Mask - An address code that determines the size of the network. Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of

devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an

electrical circuit. TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent.

TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a network.

Telnet - A user command and TCP/IP protocol used for accessing remote PCs. TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability.

Throughput - The amount of data moved successfully from one node to another in a given time period.

TKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for each packet transmitted. Topology - The physical layout of a network. TX Rate - Transmission Rate. UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement

from the recipient of the data that is sent. Upgrade - To replace existing software or firmware with a newer version. Upload - To transmit a file over a network. URL (Uniform Resource Locator) - The address of a file located on the Internet.

Appendix F: Glossary

VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another over the Internet.

WAN (Wide Area Network)- The Internet. WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for greater security.

WINIPCFG - A Windows 98 and Me utility that displays the IP address for a particular networking device.

WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with each other wirelessly. WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol)

encryption, which can be used in conjunction with a RADIUS server.

Appendix F: Glossary

Appendix G: Specifications

Model WRT54GL
Standards IEEE 802.3, IEEE 802.3u, IEEE 802.11g, IEEE 802.11b
Channels 11 Channels (US, Canada)
13 Channels (Europe, Japan)
Ports Internet: One 10/100 RJ-45 Port
LAN: Four 10/100 RJ-45 Switched Ports
One Power Port
Buttons Reset, SecureEasySetup
Cabling Type CAT5
LEDs Power, DMZ, WLAN, LAN (1-4), Internet, SecureEasySetup
RF Power Output 18 dBm
UPnP able/cert Able
Security Features Stateful Packet Inspection (SPI) Firewall, Internet Policy
Wireless Security Wi-Fi Protected Access™2 (WPA2), WEP, Wireless MAC Filtering
Dimensions 7.32" x 1.89" x 6.06"
(W x H x D) (186 mm x 48 mm x 154 mm)
Unit Weight 13.8 oz. (0.391 kg)
Power External, 12V DC, 0.5A
Certifications FCC, IC-03, CE, Wi-Fi (802.11b, 802.11g), WPA2, WMM

Appendix G: Specifications

Operating Temp. 0ºC to 40ºC (32ºF to 104ºF)
Storage Temp. -20ºC to 70ºC (-4ºF to 158ºF)
Operating Humidity 10% to 85%, Non-Condensing
Storage Humidity 5% to 90%, Non-Condensing

Appendix G: Specifications

Appendix H: Warranty Information

LIMITED WARRANTY

Linksys warrants to You that, for a period of three years (the “Warranty Period”), your Linksys Product will be substantially free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys' entire liability under this warranty will be for Linksys at its option to repair or replace the Product or refund Your purchase price less any rebates. This limited warranty extends only to the original purchaser.

If the Product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return Authorization Number, if applicable. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. If You are requested to return the Product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. You are responsible for shipping defective Products to Linksys. Linksys pays for UPS Ground shipping from Linksys back to You only. Customers located outside of the United States of America and Canada are responsible for all shipping and handling charges.

ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives You specific legal rights, and You may also have other rights which vary by jurisdiction.

This warranty does not apply if the Product (a) has been altered, except by Linksys, (b) has not been installed, operated, repaired, or maintained in accordance with instructions supplied by Linksys, or (c) has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident. In addition, due to the continual development of new techniques for intruding upon and attacking networks, Linksys does not warrant that the Product will be free of vulnerability to intrusion or attack.

TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT (INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL LINKSYS’ LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even if any warranty or remedy provided under this Agreement fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.

Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623 USA.

Appendix I: Regulatory Information

FCC Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

This product has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. IEEE 802.11b or 802.11g operation of this product in the USA is firmware-limited to channels 1 through 11.

Safety Notices Caution: To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord. Do not use this product near water, for example, in a wet basement or near a swimming pool. Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.

Appendix I: Regulatory Information

Industry Canada Statement This device complies with Industry Canada ICES-003 and RSS210 rules.

Déclaration d’Industrie Canada Cet appareil est conforme aux normes NMB003 et RSS210 d'Industrie Canada.

Industry Canada Statement

Operation is subject to the following two conditions:

  1. This device may not cause interference and

  2. This device must accept any interference, including interference that may cause undesired operation of the device. This device has been designed to operate with an antenna having a maximum gain of 2dBi. An antenna having a higher gain is strictly prohibited per regulations of Industry Canada. The required antenna impedance is 50 ohms. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the EIRP is not more than required for successful communication.

  3. Industry Canada Radiation Exposure Statement: This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Avis d'Industrie Canada

L'utilisation de ce dispositif est autorisée seulement aux conditions suivantes :

  1. il ne doit pas produire de brouillage et

  2. il doit accepter tout brouillage radioélectrique reçu, même si ce brouillage est susceptible de compromettre le fonctionnement du dispositif. Le dispositif a été conçu pour fonctionner avec une antenne ayant un gain maximum de 2 dBi. Les règlements d'Industrie Canada interdisent strictement l'utilisation d'antennes dont le gain est supérieur à cette limite. L'impédance requise de l'antenne est de 50 ohms. Afin de réduire le risque d'interférence aux autres utilisateurs, le type d'antenne et son gain doivent être choisis de façon à ce que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne soit pas supérieure au niveau requis pour obtenir une communication satisfaisante.

  3. Avis d'Industrie Canada concernant l'exposition aux radiofréquences : Ce matériel est conforme aux limites établies par IC en matière d'exposition aux radiofréquences dans un environnement non contrôlé. Ce matériel doit être installé et utilisé à une distance d'au moins 20 cm entre l'antenne et le corps de l'utilisateur. L'émetteur ne doit pas être placé près d'une autre antenne ou d'un autre émetteur, ou fonctionner avec une autre antenne ou un autre émetteur.

Appendix I: Regulatory Information

User Information for Consumer Products Covered by EU Directive 2002/96/EC on Waste Electric and Electronic Equipment (WEEE)

This document contains important information for users with regards to the proper disposal and recycling of Linksys products. Consumers are required to comply with this notice for all electronic products bearing the following symbol:

 

Appendix I: Regulatory Information

 

For more information, visit www.linksys.com.

Appendix I: Regulatory Information

Appendix J: Contact Information

Need to contact Linksys?
Visit us online for information on the latest products and updates
to your existing products at: http://www.linksys.com or
ftp.linksys.com
Can't find information about a product you want to buy
on the web? Do you want to know more about networking
with Linksys products? Give our advice line a call at: 800-546-5797 (LINKSYS)
Or fax your request in to: 949-823-3002
If you experience problems with any Linksys product,
you can call us at: 800-326-7114
Don't wish to call? You can e-mail us at: support@linksys.com
If any Linksys product proves defective during its warranty period,
you can call the Linksys Return Merchandise Authorization
department for obtaining a Return Authorization Number at: 949-823-3000
(Details on Warranty and RMA issues can be found in the Warranty
Information section in this Guide.)