Linksys WAG54G manual Wireless-G Adsl Gateway

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Wireless-G ADSL Gateway

E.Change the SSID periodically.

F.Enable WEP 128-bit Encryption. Please note that this will reduce your network performance.

G.Change the WEP encryption keys periodically.

For information on implementing these security features, please refer to the User Guide.

4. 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 are decrypted and contain much of the network’s information, such as the network’s SSID (Service Set Identifier) and the IP Address of the network PC or access point. 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.

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

A.Disable Broadcast

B.Make it unique

C.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 start from the beginning in trying to break in.

Appendix B:

60

Important Information for Wireless Products

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Contents Wireless- G Word definition How to Use this GuideCopyright and Trademarks Table of Contents Wireless-G Adsl Gateway Network Computer-to-VPN Gateway23 VPN Settings Summary Figure C-9 New Rule Properties Introduction WelcomeWhat’s in this Guide? Wireless-G Adsl Gateway Planning Your Network Gateway’s FunctionsIP Addresses What’s an IP Address?Dynamic IP Addresses What is a VPN?Dhcp Dynamic Host Configuration Protocol Servers Why do I need a VPN? VPN Gateway to VPN GatewayMAC Address Spoofing Data SniffingGetting to Know the Wireless-G Adsl Gateway Back PanelFront Panel Indication of any network activityWhile establishing the Adsl connection InternetConnecting the Wireless-G Adsl Gateway OverviewWired Connection to a Computer Ethernet ConnectionWireless Connection to a Computer Configuring the Gateway SetupWireless SecurityAccess Restrictions AdministrationApplications & Gaming StatusHow to Access the Web-based Utility Setup TabInternet Setup Multiplexing Select LLC or VC , depending on your ISPVirtual Circuit Enter the VPI and VCI ranges in the fields RFC 1483 Bridged Dynamic IPStatic IP RFC 1483 Routed RFC 2516 PPPoEBridged Mode Only RFC 2364 PPPoAOptional Settings Required by some ISPs Network SetupTZO.com Ddns TabDynDNS.org Advanced Routing Tab Advanced Routing13 Routing Table Wireless Network Wireless TabBasic Wireless Settings Tab Wireless Security Tab 15 WPA Pre-Shared Key17 WEP Wireless Access Tab Wireless Network AccessAdvanced Wireless Settings Tab Advanced WirelessAdditional Filters Security TabFirewall Local Security Gateway 22 VPNManual 24 Manual Key ManagementAdvanced VPN Tunnel Setup 26 Advanced VPN Tunnel SetupConfiguring the Gateway Security Tab Access Restrictions Tab Internet Access29 List of PCs Port Range Forwarding Applications and Gaming TabSingle Port Forwarding Port Triggering 33 Port TriggeringApplication-based QoS This setting allows you to specify traffic queue priorityAdvanced QoS Management Administration TabGateway Access Email Alerts ReportingUPnP Diagnostics Backup&RestoreFactory Defaults Ping TestUpgrade from LAN Firmware UpgradeReboot Status Tab GatewayGateway Information Internet ConnectionsLocal Network 45 Local Network47 Wireless DSL Connection 49 DSL ConnectionNeed to set a static IP address on a computer Appendix a TroubleshootingCommon Problems and Solutions Want to test my Internet connection Wireless-G Adsl Gateway Wireless-G Adsl Gateway TCP UDP IP AddressCan’t get the Internet game, server, or application to work To start over, I need to set the Gateway to factory default Need to upgrade the firmwareFirmware upgrade failed, and/or the Power LED is flashing My DSL service’s PPPoE is always disconnectingPower LED flashes continuously Frequently Asked Questions Where is the Gateway installed on the network?Is IPSec Passthrough supported by the Gateway? Does the Gateway support IPX or AppleTalk?Does the Gateway support ICQ send file? What is DMZ Hosting? What are the advanced features of the Gateway?Will the Gateway function in a Macintosh environment? Is the Gateway cross-platform compatible?What is the Ieee 802.11g standard? What Ieee 802.11b and 802.11g features are supported?What is ad-hoc mode? What is infrastructure mode?What is DSSS? What is FHSS? And what are their differences? What is the ISM band?What is Spread Spectrum? What is WEP? What is a MAC Address?How do I reset the Gateway? How do I resolve issues with signal loss?Appendix B Wireless Security Important Information for Wireless ProductsWireless-G Adsl Gateway Wireless-G Adsl Gateway Environment WAG54GHow to Establish a Secure IPSec Tunnel Create an IPSec PolicyBuild Filter Lists Filter List 1 win-RouterFilter List 2 Router -win Figure C-4 IP Filter LIstFigure C-7 IP Filter List Configure Individual Tunnel Rules Tunnel 1 win-RouterFigure C-13 Authentication Methods Figure C-16 Tunnel Setting Tab Tunnel 2 Router-winFigure C-19 IP Filter List Tab Figure C-22 Preshared Key Assign New IPSec Policy Figure C-25 Connection TypeCreate a Tunnel Through the Web-Based Utility Figure C-28 VPN TabFigure D-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions Figure D-3 MAC Address/Physical AddressUpgrade from WAN Appendix E Upgrading FirmwareAppendix F Glossary Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Wireless-G Adsl Gateway Appendix G Specifications StandardsAnnex-B, WAG54G-DE UR-2 Operating Temp 0ºC to 40ºC10% to 85% Non-Condensing Storage Temp 20ºC to 70ºC Operating HumidityStorage Humidity Appendix H Regulatory Information FCC StatementWireless-G Adsl Gateway Radio EN 300 EMC EN 301 489-1, EN 301 Safety EN Belgium Applicable Power Levels in FranceLocation Frequency Range MHz Power Eirp Wireless-G Adsl Gateway Open the Wireless Network Connection window Appendix I Warranty Information Outside of Europe Mail Address Appendix J Contact InformationEurope Mail Address