RFC 3012 (rfc3012) - Page 1 of 17

Mobile IPv4 Challenge/Response Extensions

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Network Working Group                                         C. Perkins
Request for Comments: 3012                         Nokia Research Center
Category: Standards Track                                     P. Calhoun
                                           Sun Microsystems Laboratories
                                                           November 2000


               Mobile IPv4 Challenge/Response Extensions

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   Mobile IP, as originally specified, defines an authentication
   extension (the Mobile-Foreign Authentication extension) by which a
   mobile node can authenticate itself to a foreign agent.
   Unfortunately, this extension does not provide ironclad replay
   protection for the foreign agent, and does not allow for the use of
   existing techniques (such as CHAP) for authenticating portable
   computer devices.  In this specification, we define extensions for
   the Mobile IP Agent Advertisements and the Registration Request that
   allow a foreign agent to use a challenge/response mechanism to
   authenticate the mobile node.


















Perkins & Calhoun           Standards Track
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