Editing Extensible Authentication Protocol (section)

===PPP===
{{Main|Point-to-Point Protocol}}

EAP was originally an authentication extension for the [[Point-to-Point Protocol]] (PPP). PPP has supported EAP since EAP was created as an alternative to the [[Challenge-Handshake Authentication Protocol]] (CHAP) and the [[Password Authentication Protocol]] (PAP), which were eventually incorporated into EAP. The EAP extension to PPP was first defined in {{IETF RFC|2284}}, now obsoleted by {{IETF RFC|3748}}.