RFC - 2344

Reverse Tunneling for Mobile IP

Original:	ftp://ftp.isi.edu/in-notes/rfc2344.txt
Authors:	G. Montenegro [Sun Microsystems, Inc.]
Date:	May 1998
Category:	Informational
This specification has been !!! obsoleted !!!

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Obsoleted by:
RFC-3024prop	Reverse Tunneling for Mobile IP, revised

Referred by:	12 RFC
Refers to:	6 RFC

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Status

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 (1998). All Rights Reserved.

Abstract

Mobile IP uses tunneling from the home agent to the mobile node's care-of address, but rarely in the reverse direction. Usually, a mobile node sends its packets through a router on the foreign network, and assumes that routing is independent of source address. When this assumption is not true, it is convenient to establish a topologically correct reverse tunnel from the care-of address to the home agent.

This document proposes backwards-compatible extensions to Mobile IP in order to support topologically correct reverse tunnels. This document does not attempt to solve the problems posed by firewalls located between the home agent and the mobile node's care-of address.

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