Gartner Research

What's Up With WEP?

Published: 07 August 2001

ID: G0099926

Analyst(s): Martin Reynolds


WEP is the standard security mechanism for 802.11b wireless LAN networking. Over the last year, several security weaknesses in the WEP algorithms have become public. Gartner Dataquest views these as serious issues and recommends that vendors and IT managers take prompt action to eliminate potentially disastrous security weaknesses. WEP is not a long-term solution.

Table Of Contents
  • Recommendations
  • The Security Weaknesses of 802.11b Wireless LANs
  • Weaknesses of 40-Bit WEP
  • Weaknesses of 128-Bit WEP
  • How Does WEP Work?
  • 128-Bit WEP: The Code Book Cracking Approach
  • The RC4 Weakness

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