® A Division of Cisco Systems, Inc. 2.4 GHz Wireless-G 802.11g Broadband Router WIRELESS with SRX400 User Guide Model No. WRT54GX4 Wireless-G Broadband Router with SRX400 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 © 2005 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". WRT54GX4-UG-51018NC JL Wireless-G Broadband Router with SRX400 Table of Contents Chapter 1: Introduction Welcome What's in this Guide? 1 1 2 Chapter 2: Planning Your Wireless Network Network Topology Ad-Hoc versus Infrastructure Mode Network Layout 4 4 4 4 Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 The Router's Ports and Reset Button The Router's LEDs 6 6 7 Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 Overview Hardware Installation for Connection to Your Broadband Modem Placement Options 8 8 8 9 Chapter 5: Configuring the Wireless-G Broadband Router Overview The Setup Tab - Basic Setup The Setup Tab - DDNS The Setup Tab - MAC Address Clone The Setup Tab - Advanced Routing The Wireless Tab - Basic Wireless Settings The Wireless Tab - Wireless Security The Wireless Tab - Wireless MAC Filter The Wireless Tab - Advanced Wireless Settings The Security Tab - Firewall The Access Restrictions Tab - Internet Access The Applications and Gaming Tab - Port Range Forward The Applications and Gaming Tab - Port Triggering The Applications and Gaming Tab - DMZ The Applications and Gaming Tab - QoS The Administration Tab - Management The Administration Tab - Log 10 10 11 16 17 18 20 21 23 24 26 27 29 30 30 31 34 36 Wireless-G Broadband Router with SRX400 The Administration Tab - Diagnostics The Administration Tab - Factory Defaults The Administration Tab - Firmware Upgrade The Administration Tab - Config Management The Status Tab - Router The Status Tab - Local Network The Status Tab - Wireless The Status Tab - System Performance 37 38 38 39 40 41 42 43 Appendix A: Troubleshooting Common Problems and Solutions Frequently Asked Questions 45 45 53 Appendix B: Wireless Security Security Precautions Security Threats Facing Wireless Networks 60 60 60 Appendix C: Upgrading Firmware Appendix D: Windows Help Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter Windows 98SE or Me Instructions Windows 2000 or XP Instructions For the Router's Web-based Utility 63 64 65 65 66 66 Appendix F: Glossary Appendix G: Specifications Appendix H: Warranty Information Appendix I: Regulatory Information Appendix J: Contact Information 67 72 74 75 81 Wireless-G Broadband Router with SRX400 List of Figures Figure 3-1: The Router's Side Panel Figure 3-2: The Router's LEDs Figure 4-1: Connect a PC Figure 4-2: Connect the Modem Figure 4-3: Connect the Power Figure 4-4: Router's Stand Figure 4-5: Wall-Mount Measurements Figure 5-1: Password Screen Figure 5-2: Setup Tab - Basic Setup Figure 5-3: DHCP Connection Type Figure 5-4: Static IP Connection Type Figure 5-5: PPPoE Connection Type Figure 5-6: PPTP Connection Type Figure 5-7: Telstra BigPond Connection Type Figure 5-8: Optional Settings Figure 5-9: Router IP Figure 5-10: Network Address Server Settings Figure 5-11: Time Setting Figure 5-12: Setup Tab - DDNS Figure 5-13: Setup Tab - MAC Address Clone Figure 5-14: Setup Tab - Advanced Routing Figure 5-15: Setup Tab - Advanced Routing - NAT Mode Figure 5-16: Setup Tab - Advanced Routing - NAT Mode - Routing Table Figure 5-17: Wireless Tab - Basic Wireless Settings Figure 5-18: Wireless Tab - Wireless Security (WPA/WPA Personal) Figure 5-19: Wireless Tab - Wireless Security (WPA/WPA2 Enterprise) Figure 5-20: Wireless Tab - Wireless Security (WEP) Figure 5-21: Wireless Tab - Wireless MAC Filter Figure 5-22: Wireless MAC Filter - Networked Computers Figure 5-23: Wireless Tab - Advanced Wireless Settings 6 7 8 8 8 9 9 10 11 11 12 12 13 13 14 14 15 15 16 17 18 18 19 20 21 21 22 23 23 24 Wireless-G Broadband Router with SRX400 Figure 5-24: Security Tab - Firewall Figure 5-25: Access Restrictions Tab - Internet Access Figure 5-26: Internet Policy Summary Figure 5-27: List of PCs Figure 5-28: Port Services Figure 5-29: Applications and Gaming Tab - Port Range Forward Figure 5-30: Applications and Gaming Tab - Port Triggering Figure 5-31: Applications and Gaming Tab - DMZ Figure 5-32: Applications and Gaming Tab - QoS (Add a New Application Figure 5-33: QoS - Voice Device Figure 5-34: QoS - Online Game Figure 5-35: Administration Tab - Management Figure 5-36: Administration Tab - Log Figure 5-37: Administration Tab - Diagnostics Figure 5-38: Administration Tab - Factory Defaults Figure 5-39: Administration Tab - Firmware Upgrade Figure 5-40: Administration Tab - Config Management Figure 5-41: Status Tab - Router Figure 5-42: Status Tab - Local Network Figure 5-43: DHCP Active IP Table Figure 5-44: Status Tab - Wireless Figure 5-45: Status Tab - System Performance Figure C-1: Upgrade Firmware Figure E-1: IP Configuration Screen Figure E-2: MAC Address/Adapter Address Figure E-3: MAC Address/Physical Address Figure E-4: MAC Address Clone Figure E-5: Wireless MAC Filter List 26 27 27 28 28 29 30 30 31 32 32 34 36 37 38 38 39 40 41 41 42 43 63 65 65 65 66 66 Wireless-G Broadband Router with SRX400 Chapter 1: Introduction Welcome Thank you for choosing the Linksys Wireless-G Broadband Router with SRX400. The Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely. How does the Router do all of this? A router is a device that allows access to an Internet connection over a network. When you use the Router, this access can be shared over the four switched ports or via the wireless network. The Wireless-G Broadband Router with SRX400 combines smart antenna technology with standards-based Wireless-G (802.11g) networking. By overlaying the signals of two Wireless-G compatible radios, the "Multiple In, Multiple Out" (MIMO) technology effectively doubles the data rate. Unlike ordinary wireless networking technologies that are confused by signal reflections, MIMO actually uses these reflections to increase the range and reduce "dead spots" in the wireless coverage area. The robust signal travels farther, maintaining wireless connections up to 3 times farther than standard Wireless-G. With SRX, the farther away you are, the more speed advantage you get, and SRX400 works great with standard Wireless-G and -B equipment, and other flavors of Linksys SRX. But when both ends of the wireless link are SRX400, the router can increase the throughput even more by using twice as much radio band, yielding speeds up to 10 times as fast as standard Wireless-G. But unlike other speed-enhanced technologies, SRX400 can dynamically enable this double-speed mode for SRX400 devices, while still connecting to non-SRX400 wireless devices at their respective fastest speeds. And SRX400 is a "good neighbor", always checking for other wireless devices in the area before gobbling up the radio band. In addition, the Router can encode all wireless transmissions with industrial-strength WPA encryption to help protect your data and privacy. The whole network is protected by a Stateful Packet Inspection (SPI) firewall and NAT technology. All of these security features, as well as full configurability, are accessed through the easy-touse, 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. mbps: one million bits per second; a unit of measurement for data transmission browser: an application program that provides a way to look at and interact with all the information on the World Wide Web. lan (Local Area Network): The computers and networking products that make up the network in your home or office 802.11b: an IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz. 802.11g: an IEEE 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. Chapter 1: Introduction Welcome 1 Wireless-G Broadband Router with SRX400 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 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 Router 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 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 with SRX400. What's in this Guide? This user guide covers the steps for setting up and using the Wireless-G Broadband Router with SRX400. · 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 with SRX400 This chapter describes the Router's physical features. · Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 This chapter instructs you on how to connect the Router to your network. · Chapter 5: Configuring the Wireless-G Broadband Router with SRX400 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. Chapter 1: Introduction What's in this Guide? 2 Wireless-G Broadband Router with SRX400 · 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. · Appendix H: Warranty Information This appendix supplies the Router's warranty information. · Appendix I: Regulatory Information This appendix supplies the Router's regulatory information. · A ...