Summary

In this chapter, we learnt 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 take a 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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