
424 ◾ Security for Multihop Wireless Networks
by describing the extensible authentication protocol (EAP) as it is a fundamen-
tal, flexible, and well-spread standard supporting various authentication methods.
EAP controls the network access between a supplicant entity and an authentica-
tor. e supplicant is the equipment which is requesting the authentication, while
the authenticator is the equipment that is leading the authentication. at is, the
authenticator authenticates the supplicant station relying on a specific EAP authen-
tication method.
When the authenticator does not support the authentication method selected by
the supplicant stat