Chapter Summary

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  • Wireless networks have a high potential for abuse because potential attackers can access the network without physically entering a building.

  • WEP provides authentication and encryption. However, because of a weakness in the way static WEP uses encryption keys, it is vulnerable to attacks that can compromise the privacy and integrity of network communications.

  • 802.1X authentication can be used to overcome static WEP’s most significant security vulnerability by forcing wireless clients to reauthenticate to a RADIUS service on a regular basis, thereby generating a new shared secret. When WEP is forced to automatically generate a new shared secret on a regular basis, it is called dynamic WEP.

  • To authenticate wireless users by using a user name and password pair, use PEAP authentication. To authenticate users with public key certificates, use EAP-TLS.

  • WPA provides stronger encryption than WEP but is not as widely supported.

  • You should publish policies defining how wireless networks can be used and how they should be configured in your organization.

  • The most efficient way to assign authorization rights for wireless clients is to create groups specifically for wireless users and computers in Active Directory.

  • You can use Certificate Services to enroll certificates for the IAS server and, if you use EAP-TLS authentication, the wireless clients.

  • If you use WEP encryption, you can configure Windows XP and Windows Server 2003 wireless clients by using a GPO.

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MCSA(s)MCSE Self-Paced Training Kit Exam 70-299 (c) Implementing and Administering Security in a M[.  .. ]twork
MCSA/MCSE Self-Paced Training Kit (Exam 70-299): Implementing and Administering Security in a MicrosoftВ® Windows Server(TM) 2003 Network (Pro-Certification)
ISBN: 073562061X
EAN: 2147483647
Year: 2004
Pages: 217

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