I-D ACTION:draft-ietf-mobileip-challenge-01.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Routing for Wireless/Mobile Hosts Working Group of the IETF.

	Title		: Mobile IP Challenge/Response Extensions
	Author(s)	: P. Calhoun, C. Perkins
	Filename	: draft-ietf-mobileip-challenge-01.txt
	Pages		: 7
	Date		: 23-Feb-99
	
   Mobile IP, as originally specified, defined an authentication
   extension (the Mobile-Foreign Authentication Extension) by which
   a mobile node could authenticate itself to a foreign agent.
   Unfortunately, this extension does not provide ironclad replay
   protection, and worse yet does not conform to existing techniques
   (such as CHAP) for authenticating transportable computer devices.
   In this specification, we define extensions for the Mobile IP
   Agent Advertisements and the Registration Request that allow use of
   such challenge/response mechanisms for allowing a foreign agent to
   authenticate the mobile node.

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