Linksys la), wag300n (eu manual Appendix B Wireless Security, Security Precautions

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Wireless-N ADSL2+ Gateway

Appendix B: Wireless Security

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 PSK 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 5: Configuring the Wireless-N ADSL2+ Gateway.”

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 can be easily decrypted and contain much of the network’s information, such as the network’s SSID (Service Set Identifier). 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.

Appendix B: Wireless Security

NOTE: Some of these security features are available only through the network gateway, router, or access point. Refer to the gateway, router, or access point’s documentation for more information.

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Security Precautions

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Contents GHz Word definition How to Use this GuideCopyright and Trademarks Table of Contents Wireless-N ADSL2+ Gateway Network Ports and Reset Button on Side Panel25 Internet Access Policy Welcome IntroductionWhat’s in this User Guide? Wireless-N ADSL2+ Gateway What’s an IP Address? Planning Your NetworkGateway’s Functions IP AddressesDynamic IP Addresses Dhcp Dynamic Host Configuration Protocol ServersPorts and Reset Button on Side Panel GettingtoKnowtheWireless-NADSL2+GatewayLEDs on Side Panel WirelessOverview Connecting the Wireless-N ADSL2+ GatewayWired Connection to a Computer Connect the Power Wireless Connection to a ComputerWireless Configuring the Wireless-N ADSL2+ GatewaySetup Applications & Gaming Access RestrictionsAdministration SecurityInternet Setup How to Access the Web-based UtilitySetup Tab Basic Setup TabStatic IP RFC 1483 Bridged Dynamic IPIPoA RFC 1483 RoutedRFC 2364 PPPoA RFC 2516 PPPoENetwork Setup Bridge Mode OnlyOptional Settings required by some ISPs Configuring the Wireless-N ADSL2+ Gateway Setup Tab TZO.com Ddns TabDynDNS.org Advanced Routing Advanced Routing Tab12 Routing Table Wireless Network Wireless TabBasic Wireless Settings Tab PSK2-Personal Wireless Security TabPSK-Personal PSK2-Enterprise PSK-EnterpriseRadius WEP Wireless MAC Filter Wireless MAC Filter TabAdvanced Wireless Advanced Wireless Settings TabConfiguring the Wireless-N ADSL2+ Gateway Wireless Tab Firewall Security TabFirewall Tab VPN Passthrough VPN Passthrough TabInternet Access Policy Access Restrictions TabInternet Access Policy Tab 27 List of PCs Single Port Forwarding Applications and Gaming TabSingle Port Range Forwarding Tab Port Range Forwarding Port Range Forwarding TabPort Range Triggering Port Triggering TabDMZ DMZ TabQoS Tab QoS Quality of Service33 QoS Online Game Remove SummaryManagement Tab Administration TabGateway Access Wlan UPnPEmail Alerts Reporting TabReporting Ping Test Diagnostics TabRestore Configuration Backup & Restore TabBackup Configuration Firmware Upgrade Factory Defaults TabFirmware Upgrade Tab Factory DefaultsInternet Connection Status TabGateway Tab Gateway InformationLocal Network Local Network Tab52 Wireless PVC Connection DSL Connection TabDSL Status Need to set a static IP address on a computer Appendix a TroubleshootingCommon Problems and Solutions Want to test my Internet connection Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway TCP Application Start and End Protocol IP Address EnableCan’t get the Internet game, server, or application to work Firmware upgrade failed, and/or the Power LED is flashing To start over, I need to set the Gateway to factory defaultNeed to upgrade the firmware Power LED flashes continuously My DSL service’s PPPoE is always disconnectingIs IPSec Passthrough supported by the Gateway? Frequently Asked QuestionsWhere is the Gateway installed on the network? Does the Gateway support ICQ send file? Does the Gateway support IPX or AppleTalk?What is DMZ Hosting? How many ports can be simultaneously forwarded? What are the advanced features of the Gateway?What is the Ieee 802.11g standard? Is the Gateway cross-platform compatible?What is infrastructure mode? What is the Ieee 802.11b standard?What Ieee 802.11b and 802.11g features are supported? What is ad-hoc mode?What is WEP? What is the ISM band?What is Spread Spectrum? What is DSSS? What is FHSS? And what are their differences?Have excellent signal strength, but I cannot see my network How do I reset the Gateway?How do I resolve issues with signal loss? Security Threats Facing Wireless Networks Appendix B Wireless SecuritySecurity Precautions Appendix B Wireless Security Wireless-N ADSL2+ Gateway Windows 98 or Me Instructions Figure C-1 IP Configuration ScreenFigure C-3 MAC Address/Physical Address Windows 2000 or XP InstructionsAppendix D Upgrading Firmware Figure D-1 Firmware UpgradeAppendix E Glossary Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Appendix F Specifications VPN Passthrough for IPSec, PPTP, and L2TP Protocols ToD filter Blocks Access by TimeSsid Broadcast Disable Access restriction by MAC and IP addressesAppendix G Warranty Information FCC Statement Appendix H Regulatory InformationDual-Band Wireless Access Point Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Location Frequency Range MHz Power Eirp Applicable Power Levels in FranceOpen the Wireless Network Connection window Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Wireless-N ADSL2+ Gateway Europe Mail Address Appendix I Contact InformationOutside of Europe Mail Address