June 2010
Beginner to intermediate
232 pages
7h 56m
English
Content preview from Mobile Computing
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No security or security is provided through other means 802.11 security
Hub Hub
AP AP
Printer
Figure 11.1 Wireless Security of 802.11 in a Typical Network
Security Issues in Mobile Computing 169
802.11 authentication
Open system authentication
(1-stage challenge-response)
Non cryptographic
Does not use RC4
No identity verification
required for station to join
network
Station required to prove
shared WEP key to join
network
(Optional)
Shared key authentication
(2-stage challenge-response)
Cryptographic
Uses RC4
Figure 11.2 802.11 Authentication Techniques— a Taxonomy
11.2 IEEE 802.11 security through WEP
This section discusses the built-in security features of 802.11. ...
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