RFC 2284 (rfc2284) - Page 2 of 15

PPP Extensible Authentication Protocol (EAP)

RFC 2284                          EAP                         March 1998


      3.4       MD5-Challenge ...................................   11
      3.5       One-Time Password (OTP) .........................   11
      3.6       Generic Token Card ..............................   12
   REFERENCES ...................................................   13
   ACKNOWLEDGEMENTS .............................................   14
   CHAIR'S ADDRESS ..............................................   14
   AUTHORS' ADDRESSES ...........................................   14
   Full Copyright Statement .....................................   15

1.  Introduction

   In order to establish communications over a point-to-point link, each
   end of the PPP link must first send LCP packets to configure the data
   link during Link Establishment phase.  After the link has been
   established, PPP provides for an optional Authentication phase before
   proceeding to the Network-Layer Protocol phase.

   By default, authentication is not mandatory.  If authentication of
   the link is desired, an implementation MUST specify the
   Authentication-Protocol Configuration Option during Link
   Establishment phase.

   These authentication protocols are intended for use primarily by
   hosts and routers that connect to a PPP network server via switched
   circuits or dial-up lines, but might be applied to dedicated links as
   well.  The server can use the identification of the connecting host
   or router in the selection of options for network layer negotiations.

   This document defines the PPP Extensible Authentication Protocol
   (EAP).  The Link Establishment and Authentication phases, and the
   Authentication-Protocol Configuration Option, are defined in The
   Point-to-Point Protocol (PPP) [1].

1.1.  Specification of Requirements

   In this document, several words are used to signify the requirements
   of the specification.  These words are often capitalized.  The key
   words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
   "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this document
   are to be interpreted as described in RFC 2119 [6].

1.2.  Terminology

   This document frequently uses the following terms:







Blunk & Vollbrecht          Standards Track