Lightweight Extensible Authentication Protocol
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LEAP is a Cisco-proprietary wireless encryption technique. LEAP stands for Lightweight Extensible Authentication Protocol. Important features of LEAP are dynamic WEP keys and mutual authentication (between a wireless client and a RADIUS server). LEAP allows for clients to reauthenticate frequently; upon each successful authentication, the clients acquire a new WEP key (with the hope that the WEP keys live long enough not to be cracked).