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Linksys 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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Linksys WRT54GP2 manual Appendix B Wireless Security, Security Precautions, Wireless-G Broadband Router with 2 Phone Ports

Contents

VoI P Wireless- GInstallation and Troubleshooting Guide Broadband Router with 2 Phone Portsword definition How to Use this GuideWireless-G Broadband Router with 2 Phone Ports Copyright and TrademarksChapter 5 Configuring the Router Table of ContentsChapter 2 Planning Your Wireless Network Chapter 4 Connecting the RouterAppendix E Glossary Appendix F SpecificationsAppendix G Warranty Information Appendix D Windows HelpList of Figures Figure 5-32 Administration Tab - Log Chapter 1 Introduction Chapter 1 IntroductionWelcome Wireless-G Broadband Router with 2 Phone PortsChapter 5 Configuring the Router What’s in this Guide?Wireless-G Broadband Router with 2 Phone Ports Chapter 4 Connecting the RouterYou also have other chapters available for reference Wireless-G Broadband Router with 2 Phone PortsChapter 1 Introduction Wireless-G Broadband Router with 2 Phone PortsAppendix H Regulatory Information Appendix I Contact InformationWireless-G Broadband Router with 2 Phone Ports Chapter 2 Planning Your Wireless NetworkAd-Hoc versus Infrastructure Mode Network TopologyNetwork Layout Network LayoutWireless-G Broadband Router with 2 Phone Ports Chapter 2 Planning Your Wireless NetworkThe Back Panel Wireless-G Broadband Router with 2 Phone Ports The Front PanelChapter 3 Getting to Know the Router Proceed to “Chapter 4 Connecting the Router.”Wireless-G Broadband Router with 2 Phone Ports InternetWireless-G Broadband Router with 2 Phone Ports Chapter 3 Getting to Know the RouterThe Front Panel Chapter 4 Connecting the Router Chapter 4 Connecting the RouterOverview Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports Connection InstructionsChapter 5 Configuring the Router Wireless-G Broadband Router with 2 Phone PortsOverview Security SetupWireless Wireless-G Broadband Router with 2 Phone PortsApplications & Gaming AdministrationWireless-G Broadband Router with 2 Phone Ports VoiceHow to Access the Web-based Utility Wireless-G Broadband Router with 2 Phone PortsStatus The Setup Tab - Basic Setup Internet SetupWireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Static IPPPPoE RAS for SingTel Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports Chapter 5 Configuring the Router The Setup Tab - Basic SetupPPTP Wireless-G Broadband Router with 2 Phone Ports Heart Beat SignalRouter IP Network SetupOptional Settings Wireless-G Broadband Router with 2 Phone PortsSubnet Mask. The default value is Network Address Server Settings DHCPWireless-G Broadband Router with 2 Phone Ports Local IP Address. The default value isThe Setup Tab - DDNS Time SettingWireless-G Broadband Router with 2 Phone Ports TZO.com Wireless-G Broadband Router with 2 Phone PortsDDNS DynDNS.orgThe Setup Tab - MAC Address Clone Wireless-G Broadband Router with 2 Phone PortsMAC Clone Wireless-G Broadband Router with 2 Phone Ports The Setup Tab - Advanced RoutingChapter 5 Configuring the Router The Setup Tab - Advanced Routing Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports The Wireless Tab - Basic Wireless SettingsChapter 5 Configuring the Router The Wireless Tab - Wireless SecurityWireless-G Broadband Router with 2 Phone Ports Figure 5-15 Wireless Tab - Wireless Security WPA Pre-Shared KeyWireless-G Broadband Router with 2 Phone Ports Chapter 5 Configuring the RouterThe Wireless Tab - Wireless Security Wireless-G Broadband Router with 2 Phone Ports The Wireless Tab - Wireless Network AccessChapter 5 Configuring the Router The Wireless Tab - Advanced Wireless SettingsWireless-G Broadband Router with 2 Phone Ports Figure 5-20 Advanced Wireless SettingsWireless-G Broadband Router with 2 Phone Ports Filter IP Address Range The Security Tab - FilterWireless-G Broadband Router with 2 Phone Ports Chapter 5 Configuring the RouterBlock WAN Requests Wireless-G Broadband Router with 2 Phone PortsThe Security Tab - VPN Passthrough Wireless-G Broadband Router with 2 Phone PortsVPN Passthrough Port Range Forwarding The Voice TabThe Applications & Gaming Tab - Port Range Forwarding Wireless-G Broadband Router with 2 Phone PortsFigure 5-26 Applications & Gaming Tab Port Triggering ip internet protocol a protocol used to send data over a networkThe Applications & Gaming Tab - UPnP Forwarding Wireless-G Broadband Router with 2 Phone PortsUPnP Forwarding FTP File Transfer Protocol. A protocol used to transfer files over a TCP/IP network Internet, UNIX, etc.. For example, after developing the HTML pages for a website on a local machine, they are typically uploaded to the web server using FTP Wireless-G Broadband Router with 2 Phone PortsSNMP Simple Network Management Protocol. A widely used network monitoring and control protocol. Data is passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device hub, router, bridge, etc. to the workstation console used to oversee the network. The agents return information contained in a MIB Management Information Base, which is a data structure that defines what is obtainable from the device and what can be controlled turned off, on, etc Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports The Applications & Gaming Tab - DMZThe Applications & Gaming Tab - QoS Wireless-G Broadband Router with 2 Phone PortsApplication-based QoS Wireless-G Broadband Router with 2 Phone Ports Port-based QoSSpecific Port# fields Voice QoS Wireless-G Broadband Router with 2 Phone PortsThe Administration Tab - Management Router PasswordWireless-G Broadband Router with 2 Phone Ports Backup and Restore Wireless-G Broadband Router with 2 Phone PortsUPnP Wireless-G Broadband Router with 2 Phone Ports The Administration Tab - Logruns a networking device The Administration Tab - Factory DefaultsThe Administration Tab - Firmware Upgrade Wireless-G Broadband Router with 2 Phone PortsLine1 Status The Status Tab - VoiceWireless-G Broadband Router with 2 Phone Ports InformationWireless-G Broadband Router with 2 Phone Ports The Status Tab - RouterThe Status Tab - Local Network Wireless-G Broadband Router with 2 Phone PortsLocal Network The Status Tab - Wireless WirelessWireless-G Broadband Router with 2 Phone Ports Appendix A Troubleshooting Common Problems and SolutionsWireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports For Windows 98 and Millennium3. I need to set a static IP address on a PC Wireless-G Broadband Router with 2 Phone Ports For WindowsFor Windows XP Wireless-G Broadband Router with 2 Phone Ports A. Click Start and Control Panel4. I want to test my Internet connection 3. In the Components checked are used by this connection box, highlight Internet Protocol TCP/IP, and click the Properties button. Make sure that Obtain an IP address automatically and Obtain DNS server address automatically are selected Wireless-G Broadband Router with 2 Phone PortsIf you get a reply, the computer is communicating with the Router Wireless-G Broadband Router with 2 Phone Ports6. I am not able to access the Router’s Web-based Utility Setup page Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports 8. I need to set up a server behind my RouterB. Enter any name you want to use for the Application Start and End EnabledWireless-G Broadband Router with 2 Phone Ports Application10. I can’t get the Internet game, server, or application to work Wireless-G Broadband Router with 2 Phone PortsD. Enter the Ethernet adapter’s IP address of the computer you want exposed to the Internet. This will bypass the NAT security for that computer. Please refer to “Appendix C Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address Wireless-G Broadband Router with 2 Phone PortsFor Microsoft Internet Explorer 5.0 or higher Wireless-G Broadband Router with 2 Phone Ports13. To start over, I need to set the Router to factory default 14. My DSL service’s PPPoE is always disconnectingWireless-G Broadband Router with 2 Phone Ports 16. I need to use port triggering Wireless-G Broadband Router with 2 Phone Ports 1362Can I make calls if my Internet connection is down? Frequently Asked QuestionsWireless-G Broadband Router with 2 Phone Ports How do I make a phone call?Is IPSec Passthrough supported by the Router? Wireless-G Broadband Router with 2 Phone PortsWhere is the Router installed on the network? What is Network Address Translation and what is it used for?Wireless-G Broadband Router with 2 Phone Ports How do I get Half-Life Team Fortress to work with the Router?How can I block corrupted FTP downloads? Wireless-G Broadband Router with 2 Phone Ports Appendix A TroubleshootingFrequently Asked Questions What is DMZ Hosting? Wireless-G Broadband Router with 2 Phone PortsIf all else fails in the installation, what can I do? Reset the Router by holding down the Reset button for approximately five seconds. Reset your cable or DSL modem by powering the unit off and then on. Contact your Internet phone service provider for assistance. Refer to “Appendix H Contact Information” for contact informationIs the Router cross-platform compatible? Wireless-G Broadband Router with 2 Phone PortsWhat is the maximum number of VPN sessions allowed by the Router? Does the Router pass PPTP packets or actively route PPTP sessions?What IEEE 802.11b features are supported? Wireless-G Broadband Router with 2 Phone PortsWhat is the IEEE 802.11b standard? What is the IEEE 802.11g standard?What is ad-hoc mode? What is infrastructure mode?What is roaming? Appendix A Troubleshooting Wireless-G Broadband Router with 2 Phone PortsWhat is ISM band? What is Spread Spectrum?What is WPA? Wireless-G Broadband Router with 2 Phone PortsWhat is DSSS? What is FHSS? And what are their differences? What is WEP?How many channels/frequencies are available with the Router? Wireless-G Broadband Router with 2 Phone PortsHow do I resolve issues with signal loss? I have excellent signal strength, but I cannot see my networkWireless-G Broadband Router with 2 Phone Ports Appendix A TroubleshootingFrequently Asked Questions Appendix B Wireless Security Security PrecautionsWireless-G Broadband Router with 2 Phone Ports Wireless-G Broadband Router with 2 Phone Ports Security Threats Facing Wireless NetworksThere are several ways that WEP can be maximized Wireless-G Broadband Router with 2 Phone PortsWPA 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 Wireless-G Broadband Router with 2 Phone PortsWindows 98 or Me Instructions Wireless-G Broadband Router with 2 Phone PortsAppendixCFindingtheMACAddressandIPAddressforYour Ethernet Adapter Windows 2000 or XP Instructions For the Router’s Web-based UtilityWireless-G Broadband Router with 2 Phone Ports Shared Resources Appendix D Windows HelpWireless-G Broadband Router with 2 Phone Ports TCP/IPAppendix D Windows Help Wireless-G Broadband Router with 2 Phone PortsAppendix E Glossary Wireless-G Broadband Router with 2 Phone PortsAppendix E Glossary Byte - A unit of data that is usually eight bits long Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports Dynamic IP Address - A temporary IP address assigned by a DHCP serverAppendix E Glossary IP Internet Protocol - A protocol used to send data over a network Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports Multicasting - Sending data to a group of destinations at onceAppendix E Glossary Router - A networking device that connects multiple networks together Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports SSID Service Set IDentifier - Your wireless networks nameAppendix E Glossary Upload - To transmit a file over a network Wireless-G Broadband Router with 2 Phone PortsAppendix F Specifications Dimensions Wireless-G Broadband Router with 2 Phone Ports Appendix G Warranty InformationAppendix G Warranty Information Wireless-G Broadband Router with 2 Phone PortsWireless-G Broadband Router with 2 Phone Ports Appendix H Regulatory InformationIndustry Canada Canada Wireless-G Broadband Router with 2 Phone PortsAppendix I Contact Information Appendix I Contact Information Wireless-G Broadband Router with 2 Phone Ports