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December 2004
viii Contents
Appendix D
Wireless Networking Basics
Wireless Networking Overview ...................................................................................... D-1
Infrastructure Mode ................................................................................................. D-1
Ad Hoc Mode (Peer-to-Peer Workgroup) ................................................................ D-2
Network Name: Extended Service Set Identification (ESSID) ................................ D-2
Wireless Channels .................................................................................................. D-2
WEP Wireless Security .................................................................................................. D-4
WEP Authentication ................................................................................................ D-4
WEP Open System Authentication ......................................................................... D-5
WEP Shared Key Authentication ............................................................................ D-6
Key Size and Configuration .............................................................................. D-7
How to Use WEP Parameters ................................................................................. D-8
WPA Wireless Security .................................................................................................. D-8
How Does WPA Compare to WEP? ........................................................................ D-9
How Does WPA Compare to IEEE 802.11i? ........................................................ D-10
What are the Key Features of WPA Security? ...................................................... D-10
WPA Authentication: Enterprise-level User
Authentication via 802.1x/EAP and RADIUS .................................................. D-12
WPA Data Encryption Key Management ........................................................ D-14
Is WPA Perfect? .................................................................................................... D-16
Product Support for WPA ...................................................................................... D-16
Supporting a Mixture of WPA and WEP Wireless Clients ............................... D-16
Changes to Wireless Access Points ............................................................... D-16
Changes to Wireless Network Adapters ......................................................... D-17
Changes to Wireless Client Programs ............................................................ D-18
Glossary
List of Glossary Terms ...................................................................................................G-1
Index