'''LEAP''' is a [[Cisco]]-proprietary wireless [[encryption]] technique developed by [[Cisco Systems]] . 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).