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BackTrack 5 Wireless Penetration Testing Beginner’s Guide by Vivek Ramachandran

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Summary

In this chapter, we have learnt the following about WLAN encryption:

  • WEP is flawed and no matter what the WEP key is, with enough data packet samples it is always possible to crack WEP.
  • WPA/WPA2 is cryptographically un-crackable currently, however, under special circumstances, such as when a weak passphrase is chosen in WPA/WPA2-PSK, it is possible to retrieve the passphrase using dictionary attacks.
  • In the next chapter, we will look at different attacks on the WLAN Infrastructure, such as rogue access points, evil twins, bit flipping attacks, and so on.

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