Shortcomings of plain wep security – Siemens IEEE802.11 User Manual
Page 60
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WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt
Page 60
© Siemens, 2002
Shortcomings of plain WEP security
n
WEP unsecure at any key length
– IV space too small, lack of IV replay protection
– known plaintext attacks
n
No user authentication
– Only NICs are authenticated
n
No mutual authentication
– Only station is authenticated against access point
n
Missing key management protocol
– No standardized way to change keys on the fly
– Difficult to manage per-user keys for larger groups
n
WEP is no mean to provide security for WLAN access,
– … but might be sufficient for casual uses.
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