Retargeting and Security in SIP: A Framework and Requirements

Document Type Expired Internet-Draft (individual)
Author Jon Peterson 
Last updated 2005-02-15
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Retargeting, the alteration by intermediaries of the destination of a Session Initiation Protocol (SIP) request, is a common practice performed during the routing of a call. Some forms of retargeting, however, give rise to security problems and potential functional gaps in SIP. This document provides a general framework for discussion of the security problems relating to retargeting, and gives requirements for mechanisms that might overcome these problems.


Jon Peterson (

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