RFC - 4189

Requirements for End-to-Middle Security for the Session Initiation Protocol (SIP)

Original:	ftp://ftp.isi.edu/in-notes/rfc4189.txt
Authors:	K. Ono [NTT Corporation], S. Tachimoto [NTT Corporation]
Date:	October 2005
Category:	Informational

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Referred by:	1 RFC
Refers to:	12 RFC

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Status

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2005).

Abstract

A Session Initiation Protocol (SIP) User Agent (UA) does not always trust all intermediaries in its request path to inspect its message bodies and/or headers contained in its message. The UA might want to protect the message bodies and/or headers from intermediaries, except those that provide services based on its content. This situation requires a mechanism called "end-to-middle security" to secure the information passed between the UA and intermediaries, which does not interfere with end-to-end security. This document defines a set of requirements for a mechanism to achieve end-to-middle security.

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