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Lightweight Extensible Authentication Protocol is a proprietary wireless LAN authentication method developed by Cisco Systems. Important features of LEAP are dynamic WEP keys and mutual authentication. LEAP allows for clients to re-authenticate frequently; upon each successful authentication, the clients acquire a new WEP key. LEAP may be configured to use TKIP instead of dynamic WEP.
Some 3rd party vendors also support LEAP through the Cisco Compatible Extensions Program.
An unofficial description of the protocol is available.
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