Cisco Systems WRT54GP2 manual Appendix B Wireless Security, Security Precautions

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Appendix B: Wireless Security

Wireless-G Broadband Router with 2 Phone Ports

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 (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.

For information on implementing these security features, refer to “Chapter 6: Configuring the Router.”

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.

Appendix B: Wireless Security

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Security Precautions

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Contents Wireless- G How to Use this Guide Copyright and TrademarksWord definition Table of Contents Wireless-G Broadband Router with 2 Phone Ports Wireless Network Access Wireless Security WPAWireless Security Wireless Security WEP32 Administration Tab Log Welcome IntroductionWhat’s in this Guide? Introduction What’s in this Guide? Wireless-G Broadband Router with 2 Phone Ports Network Topology Planning Your Wireless NetworkAd-Hoc versus Infrastructure Mode Ssid your wireless network’s nameNetwork Layout Phone2 Back PanelFront Panel Getting to Know the Router Front Panel Wireless-G Broadband Router with 2 Phone Ports Overview Connecting the RouterConnect a PC Connection InstructionsConfiguring the Router Setup WirelessSecurity Administration VoiceApplications & Gaming Status How to Access the Web-based UtilityObtain an IP automatically Setup Tab Basic SetupInternet Setup Internet Connection TypePPPoE Static IPPPPoE RAS for SingTelPptp Heart Beat Signal Heart Beat SignalPacket a unit of data sent over a network Network SetupOptional Settings Router IPNetwork Address Server Settings Dhcp Time Setting Setup Tab DdnsTZO.com DynDNS.orgMAC Clone Setup Tab MAC Address Clone12 Setup Tab Advanced Routing Setup Tab Advanced Routing13 Routing Table Entry List Wireless Tab Basic Wireless Settings 15 Wireless Tab Wireless Security WPA Pre-Shared Key Wireless Tab Wireless Security16 Wireless Tab Wireless Security WPA Radius 18 Wireless Tab Wireless Network Access Wireless Tab Wireless Network Access20 Advanced Wireless Settings Wireless Tab Advanced Wireless SettingsWireless-G Broadband Router with 2 Phone Ports Filter MAC Address Security Tab FilterFilter IP Address Range Filter Port RangeInternet requests Block WAN RequestsVPN Passthrough Security Tab VPN PassthroughPort Range Voice TabApplications & Gaming Tab Port Range Forwarding Port Range Forwarding26 Applications & Gaming Tab Port Triggering Applications & Gaming Tab UPnP Forwarding UPnP ForwardingForwarded Range Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports DMZ Applications & Gaming Tab DMZApplication-based QoS Applications & Gaming Tab QoSSpecific Port# fields Port-based QoSVoice QoS Remote Router Access Administration Tab ManagementRouter Password Local Router AccessUPnP Backup and RestoreLog Administration Tab LogFirmware with a newer version Administration Tab Factory DefaultsAdministration Tab Firmware Upgrade Runs a networking deviceLine2 Status Status Tab VoiceInformation Line1 Status38 Status Tab Router Status Tab RouterLocal Network Status Tab Local NetworkStatus Tab Wireless Common Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a PC For Windows 98 and MillenniumFor Windows XP For WindowsWant to test my Internet connection For Windows XP Configuring the Router for details Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router TCP Application Start and End Protocol IP Address EnabledCan’t get the Internet game, server, or application to work Wireless-G Broadband Router with 2 Phone Ports For Netscape 4.7 or higher To start over, I need to set the Router to factory defaultMy DSL service’s PPPoE is always disconnecting For Microsoft Internet Explorer 5.0 or higherWireless-G Broadband Router with 2 Phone Ports Need to use port triggering Can I make calls while I’m browsing the Internet? Frequently Asked QuestionsHow do I make a phone call? Can I make calls if my Internet connection is down?Where is the Router installed on the network? Is IPSec Passthrough supported by the Router?Does the Router support IPX or AppleTalk? How can I block corrupted FTP downloads? Wireless-G Broadband Router with 2 Phone Ports If all else fails in the installation, what can I do? What is DMZ Hosting?Will the Router function in a Macintosh environment? How can I check whether I have static or Dhcp IP addresses? Is the Router cross-platform compatible?How many ports can be simultaneously forwarded? Which modems are compatible with the Router?What is the Ieee 802.11b standard? What is the Ieee 802.11g standard?What Ieee 802.11b features are supported? What is ad-hoc mode? What is infrastructure mode?What is roaming? What is Spread Spectrum? What is ISM band?What is a MAC Address? What is DSSS? What is FHSS? And what are their differences?What is WEP? What is WPA?Have excellent signal strength, but I cannot see my network How do I resolve issues with signal loss?Wireless-G Broadband Router with 2 Phone Ports Security Precautions Appendix B Wireless SecuritySecurity Threats Facing Wireless Networks Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Windows 98 or Me Instructions Figure C-1 IP Configuration ScreenFor the Router’s Web-based Utility Windows 2000 or XP InstructionsAppendix D Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix D Windows Help Appendix E Glossary Appendix E Glossary Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports UPnP able/cert Certified Appendix F SpecificationsModel Voice ProtocolDimensions 32 x 1.89 x H x D Warranty Year LimitedStorage Humidity Limited Warranty Appendix G Warranty InformationAppendix G Warranty Information FCC Statement Appendix H Regulatory InformationSafety Notices Appendix I Contact Information Appendix I Contact Information