RFC 1334 (rfc1334) - Page 1 of 16
PPP Authentication Protocols
Alternative Format: Original Text Document
Network Working Group B. Lloyd
Request for Comments: 1334 L&A
W. Simpson
Daydreamer
October 1992
PPP Authentication Protocols
Status of this Memo
This RFC specifies an IAB standards track protocol for the Internet
community, and requests discussion and suggestions for improvements.
Please refer to the current edition of the "IAB Official Protocol
Standards" for the standardization state and status of this protocol.
Distribution of this memo is unlimited.
Abstract
The Point-to-Point Protocol (PPP) [1] provides a standard method of
encapsulating Network Layer protocol information over point-to-point
links. PPP also defines an extensible Link Control Protocol, which
allows negotiation of an Authentication Protocol for authenticating
its peer before allowing Network Layer protocols to transmit over the
link.
This document defines two protocols for Authentication: the Password
Authentication Protocol and the Challenge-Handshake Authentication
Protocol. This memo is the product of the Point-to-Point Protocol
Working Group of the Internet Engineering Task Force (IETF).
Comments on this memo should be submitted to the
mailing list.
Table of Contents
1. Introduction ............................................... 2
1.1 Specification Requirements ................................. 2
1.2 Terminology ................................................ 3
2. Password Authentication Protocol ............................ 3
2.1 Configuration Option Format ................................ 4
2.2 Packet Format .............................................. 5
2.2.1 Authenticate-Request ..................................... 5
2.2.2 Authenticate-Ack and Authenticate-Nak .................... 7
3. Challenge-Handshake Authentication Protocol.................. 8
3.1 Configuration Option Format ................................ 9
3.2 Packet Format .............................................. 10
3.2.1 Challenge and Response ................................... 11
3.2.2 Success and Failure ...................................... 13
Lloyd & Simpson