The Extensible Authentication Protocol (EAP) is an Internet standard that provides an infrastructure for network access clients and authentication servers. It is described in the RFC 3748 .
EAP is not and does not specify any specific authentication mechanism. Instead, EAP procures a framework that provides some common functions and a negotiation of the desired authentication mechanism .
Originally, EAP was created as an extension to PPP that allows for the development of arbitrary plug-in modules for current and future authentication methods and technologies . Today, EAP is most often used in wireless LANs . Particularly, two wireless standards, WPA and WPA2, which have officially adopted several EAP methods as their main authentication mechanisms .
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