WEP-Verschlüsselung W-LAN

[James T. Kirk]

hi@all,

kann mir vielleicht jemand erklären, wo genau bei der wep-verschlüsselung der unterschied zwischen "shared-key" und "open-key" ist?

besten dank im voraus!

gruß

capt.kirk

[Gast Saesh]

Ich setze in einem IT-Forum mal Englischkenntnisse voraus:

The 802.11b standard supports two means of client authentication between the wireless NIC and the AP: open and shared key authentication. Open key authentication involves supplying the correct SSID. With shared key authentication, the AP sends the client device a challenge text packet that the client must then encrypt with the correct WEP key and return to the AP. If the client has the wrong key or no key, authentication will fail and the client will not be allowed to associate with the AP. Shared key authentication is not considered secure, because a hacker who detects both the clear-text challenge and the same challenge encrypted with a WEP key can decipher the WEP key.

With open key authentication, even if a client can complete authentication and associate with an AP, the use of WEP prevents the client from sending data to and receiving data from the AP, unless the client has the correct WEP key.