Linksys WRT54GS User manual

Model No.
Broadband Router
Wireless-G
WRT54GS
User Guide
WIRELESS
GHz
2.4
802.11g
with SpeedBooster

Wireless-G Broadband Router with SpeedBooster
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.
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:
In addition to these symbols, there are definitions for technical terms that are presented like this:
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.
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 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 question mark provides you with a reminder about
something you might need to do while using the
Wireless-G Broadband Router.
word: definition.
Figure 0-1: Sample Figure Description
WRT54GSV7-UG-70129NC BW
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.

Wireless-G Broadband Router with SpeedBooster
TableofContents
Chapter 1: Introduction 1
Welcome 1
What’s in this 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
Connecting One Router to Another 10
Chapter 5: Configuring the Wireless-G Broadband Router 13
Overview 13
The Setup Tab - Basic Setup 14
The Setup Tab - DDNS 19
The Setup Tab - MAC Address Clone 20
The Setup Tab - Advanced Routing 21
The Wireless Tab - Basic Wireless Settings 22
The Wireless Tab - Wireless Security 23
The Wireless Tab - Wireless MAC Filter 26
The Wireless Tab - Advanced Wireless Settings 27
The Security Tab - Firewall 29
The Security Tab - VPN Passthrough 30
The Access Restrictions Tab - Internet Access 31
The Applications and Gaming Tab - Port Range Forward 33
The Applications & Gaming Tab - Port Triggering 34
The Applications and Gaming Tab - DMZ 35
The Applications and Gaming Tab - QoS 35
The Administration Tab - Management 37

Wireless-G Broadband Router with SpeedBooster
The Administration Tab - Log 37
The Administration Tab - Diagnostics 38
The Administration Tab - Factory Defaults 39
The Administration Tab - Firmware Upgrade 39
The Administration Tab - Config Management 40
The Status Tab - Router 41
The Status Tab - Local Network 42
The Status Tab - Wireless 43
Appendix A: Troubleshooting 44
Common Problems and Solutions 44
Frequently Asked Questions 53
Appendix B: Wireless Security 60
Security Precautions 60
Security Threats Facing Wireless Networks 60
Appendix C: Upgrading Firmware 63
Appendix D: Windows Help 64
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter 65
Windows 98SE or Me Instructions 65
Windows 2000 or XP Instructions 65
For the Router’s Web-based Utility 66
Appendix F: Glossary 67
Appendix G: Specifications 72
Appendix H: Warranty Information 74
Appendix I: Regulatory Information 75
Appendix J: Contact Information 82

Wireless-G Broadband Router with SpeedBooster
ListofFigures
Figure 3-1: The Router’s Back Panel 6
Figure 3-2: The Router’s Front Panel 7
Figure 4-1: Connecting Your Modem 8
Figure 4-2: Connecting Your Network Devices 9
Figure 4-3: Connecting the Power 9
Figure 4-4: Connecting the Router Behind Another 10
Figure 4-5: Diagram for Connection to Another Router 10
Figure 4-6: Connect the Broadband Router’s Internet Port
to the other Router's Numbered Ethernet Port 11
Figure 4-7: Connecting Your Network Devices 11
Figure 4-8: Connecting the Power 12
Figure 5-1: Password Screen 13
Figure 5-2: Setup Tab - Basic Setup 14
Figure 5-3: DHCP Connection Type 14
Figure 5-4: Static IP Connection Type 14
Figure 5-5: PPPoE Connection Type 15
Figure 5-6: PPTP Connection Type 15
Figure 5-7: Telstra Cable Connection Type 16
Figure 5-8: L2TP Connection Type 16
Figure 5-9: Optional Settings 17
Figure 5-10: Router IP 17
Figure 5-11: Network Address Server Settings 17
Figure 5-12: Time Setting 18
Figure 5-13: Setup Tab - DDNS - DynDNS 19
Figure 5-14: Setup Tab - DDNS - TZO 19
Figure 5-15: Setup Tab - MAC Address Clone 20
Figure 5-16: Setup Tab - Advanced Routing (Gateway) 21
Figure 5-17: Setup Tab - Advanced Routing (Router) 21
Figure 5-18: Wireless Tab - Basic Wireless Settings 22
Figure 5-19: Wireless Tab - Wireless Security (WPA Personal) 23

Wireless-G Broadband Router with SpeedBooster
Figure 5-20: Wireless Tab - Wireless Security (WPA Enterprise) 23
Figure 5-21: Wireless Tab - Wireless Security (WPA2 Personal) 24
Figure 5-22: Wireless Tab - Wireless Security (WPA2 Enterprise) 24
Figure 5-23: Wireless Tab - Wireless Security (RADIUS) 25
Figure 5-24: Wireless Tab - Wireless Security (WEP) 25
Figure 5-25: Wireless Tab - Wireless MAC Filter 26
Figure 5-26: MAC Address Filter List 26
Figure 5-27: Wireless Tab - Advanced Wireless Settings 27
Figure 5-28: Security Tab - Firewall 29
Figure 5-29: Security Tab - VPN Passthrough 30
Figure 5-30: Access Restrictions Tab - Internet Access 31
Figure 5-31: Internet Policy Summary 31
Figure 5-32: List of PCs 31
Figure 5-33: Port Services 32
Figure 5-34: Applications and Gaming Tab - Port Range Forward 33
Figure 5-35: Applications and Gaming Tab - Port Triggering 34
Figure 5-36: Applications and Gaming Tab - DMZ 35
Figure 5-37: Applications and Gaming Tab - QOS 35
Figure 5-38: Administration Tab - Management 37
Figure 5-39: Administration Tab - Log 37
Figure 5-40: Administration Tab - Diagnostics 38
Figure 5-41: The Ping Test 38
Figure 5-42: The Traceroute Test 38
Figure 5-43: Administration Tab - Factory Defaults 39
Figure 5-44: Administration Tab - Firmware Upgrade 39
Figure 5-45: Administration Tab - Config Management 40
Figure 5-46: Status Tab - Router 41
Figure 5-47: Status Tab - Local Network 42
Figure 5-48: DHCP Clients Table 42
Figure 5-49: Status Tab - Wireless 43
Figure C-1: Upgrade Firmware 63
Figure E-1: IP Configuration Screen 65
Figure E-2: MAC Address/Adapter Address 65

Wireless-G Broadband Router with SpeedBooster
Figure E-3: MAC Address/Physical Address 65
Figure E-4: MAC Address Filter List 66
Figure E-5: MAC Address Clone 66

1
Chapter 1: Introduction
Welcome
Wireless-G Broadband Router with SpeedBooster
Chapter1:Introduction
Welcome
Thank you for choosing the Linksys Wireless-G Broadband Router with SpeedBooster. The Wireless-G Broadband
Router with SpeedBooster 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 with SpeedBooster 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 with SpeedBooster, this
access can be shared over the four switched ports and via the wireless network, broadcast at either 11Mbps for
Wireless-B or 54Mbps for Wireless-G. In addition, WEP encryption provides greater security opportunities while
the whole network is protected through a Stateful Packet Inspection (SPI) firewall and NAT technology. All of
these security features, as well as full configurability, are accessed 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 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. The Wireless-G
Broadband Router with SpeedBooster bridges wireless networks of both 802.11b and 802.11g standards and
wired networks, allowing them to communicate with each other. And since this Router has SpeedBooster
technology, your wireless network performance increases by up to 30% from old 802.11g standards. In fact, even
non-SpeedBooster-equipped devices on your network will see a speed improvement when communicating with
SpeedBooster-enhanced equipment!
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 with SpeedBooster protects your
networks from unauthorized and unwelcome users.
You should always use the Setup CD-ROM when you first install 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 with SpeedBooster, 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 with SpeedBooster.

2
Chapter 1: Introduction
What’s in this Guide?
Wireless-G Broadband Router with SpeedBooster
What’s in this Guide?
This user guide covers the steps for setting up and using the Wireless-G Broadband Router with SpeedBooster.
• Chapter 1: Introduction
This chapter describes the Router’s applications and this User Guide.
• Chapter 2: Planning Your Wireless Network
This chapter describes the basics of wireless networking.
• Chapter 3: Getting to Know the Wireless-G Broadband Router
This chapter describes the Router’s physical features.
• Chapter 4: Connecting the Wireless-G Broadband Router
This chapter instructs you on how to connect the Router to your network.
• Chapter 5: Configuring the Wireless-G Broadband Router
This chapter explains how to use the Router’s Web-Based Utility.
• Appendix A: Troubleshooting
This appendix describes some problems and solutions, as well as frequently asked questions, regarding
installation and use of the Wireless-G Broadband Router.
• Appendix B: Wireless Security
This appendix explains the risks of wireless networking and some solutions to reduce the risks.
• Appendix C: Upgrading Firmware
This appendix instructs you on how to upgrade the Router’s firmware should you need to do so.
• Appendix D: Windows Help
This appendix describes how you can use Windows Help for instructions about networking, such as installing
the TCP/IP protocol.
• Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter.
This appendix describes how to find the MAC address for your computer’s Ethernet adapter so you can use
the Router’s MAC filtering and/or MAC address cloning feature.
• Appendix F: Glossary
This appendix gives a brief glossary of terms frequently used in networking.
• Appendix G: Specifications
This appendix provides the Router’s technical specifications.

3
Chapter 1: Introduction
What’s in this Guide?
Wireless-G Broadband Router with SpeedBooster
• Appendix H: Warranty Information
This appendix supplies the Router’s warranty information.
• Appendix I: Regulatory Information
This appendix supplies the Router’s regulatory information.
• Appendix J: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.