Linksys WPC54GX4 manual Appendix C Wireless Security, Security Precautions

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Wireless-G Notebook Adapter with SRX400

Appendix C: 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 WPA if it is available. Please note that this may reduce your network performance.

7.Change the encryption keys periodically.

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 C: Wireless Security

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.

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Security Precautions

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Contents User Guide Copyright and Trademarks How to Use This User GuideWord definition Table of Contents Setup Wizard’s Welcome Screen Adapter’s LEDs10 Import a Profile What’s in This User Guide? IntroductionWelcome But what does all of this mean?Introduction What’s in This User Guide? Roaming Planning Your Wireless NetworkNetwork Topology Topology the physical layout of a networkNetwork Layout Green. The LED lights up when the Adapter is powered on Getting to Know the Wireless-G Notebook Adapter with SRX400LED Indicators Adapter is transmitting or receiving dataStarting the Setup Wizard On the Welcome screen, you have the following choicesInsert the Notebook Adapter Screen Setting Up the Adapter Available Wireless Network ScreenSetting Up the Adapter with an Available Network WEP Key Needed for ConnectionWPA-Personal Needed for Connection Setting Up the Adapter with Manual Setup 10 Available Wireless Network ScreenClick Next to continue or click Back to change any settings 12 Wireless Mode ScreenWEP 17 Wireless Security WPA2 Personal Screen EAP-TLS Radius 22 Confirm New Settings Screen Wireless Network Status screen Using the Wireless Network MonitorAccessing the Wireless Network Monitor Link Information ScreensWireless Network Status More Information Wireless Network Status ScreenWireless Network Statistics ProfileSite Survey Site InformationUsing the Wireless Network Monitor Site Survey Profiles Profiles ScreenCreating a New Profile 12 Create a New Profile14 Available Wireless Network Screen 16 WPA-Personal Needed for Connection 20 Network Settings Screen 21 Wireless Mode Screen 23 Wireless Security Screen 26 Wireless Security WPA2 Personal Screen 27 Wireless Security WPA Enterprise Using EAP-TLS Screen 29 Wireless Security Radius Using EAP-TLS Screen 32 Congratulations Screen Frequently Asked Questions Appendix a TroubleshootingCommon Problems and Solutions Wireless-G Notebook Adapter does not work properlyWhat Ieee 802.11b features are supported? What is the Ieee 802.11b standard?What is the Ieee 802.11g standard? What Ieee 802.11g features are supported?What is Spread Spectrum? What is roaming?What is ISM band? What is DSSS? What is FHSS? And what are their differences?What is WPA? What is WEP?What is RADIUS? Select Use Linksys Wireless Network Monitor Figure B-3 Windows XP Wireless Configuration IconFigure B-4 Available Wireless Network You are now connected to your wireless network Figure B-6 Network Connection Wireless SecuritySecurity Precautions Appendix C Wireless SecuritySecurity Threats Facing Wireless Networks Appendix C Wireless Security Wireless-G Notebook Adapter with SRX400 Shared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary Wireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 20dBm for Wireless-B/19dBm for Wireless-G Appendix F SpecificationsModel Appendix G Warranty Information Limited WarrantyAppendix H Regulatory Information FCC StatementWireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 Wireless-G Notebook Adapter with SRX400 Dual-Band Wireless Access Point Appendix I Contact Information Linksys