Contents v
202-10060-01, September 2004
Appendix B
Wireless Networking Basics
Wireless Networking Overview ...................................................................................... B-1
Infrastructure Mode ................................................................................................. B-1
Ad Hoc Mode (Peer-to-Peer Workgroup) ................................................................ B-2
Network Name: Extended Service Set Identification (ESSID) ................................ B-2
Wireless Channels .................................................................................................. B-2
WEP Wireless Security .................................................................................................. B-4
WEP Authentication ................................................................................................ B-4
WEP Open System Authentication ......................................................................... B-5
WEP Shared Key Authentication ............................................................................ B-6
Key Size and Configuration .............................................................................. B-7
How to Use WEP Parameters ................................................................................. B-8
WPA Wireless Security .................................................................................................. B-8
How Does WPA Compare to WEP? ........................................................................ B-9
How Does WPA Compare to IEEE 802.11i? ........................................................ B-10
What are the Key Features of WPA Security? ...................................................... B-10
WPA Authentication: Enterprise-level User
Authentication via 802.1x/EAP and RADIUS .................................................. B-12
WPA Data Encryption Key Management ........................................................ B-14
Is WPA Perfect? .................................................................................................... B-16
Product Support for WPA ...................................................................................... B-16
Supporting a Mixture of WPA and WEP Wireless Clients ............................... B-16
Changes to Wireless Access Points ............................................................... B-16
Changes to Wireless Network Adapters ......................................................... B-17
Changes to Wireless Client Programs ............................................................ B-18
Appendix C
Network, Routing, Firewall, and Cabling Basics
Basic Router Concepts .................................................................................................. B-1
What is a Router? ................................................................................................... B-1
IP Addresses and the Internet ....................................................................................... B-2
Netmask .................................................................................................................. B-4
Subnet Addressing .................................................................................................. B-4
Private IP Addresses ............................................................................................... B-7
Single IP Address Operation Using NAT ................................................................. B-7
IP Configuration by DHCP ...................................................................................... B-8
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