A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Secure Caller-ID Fallback Mode
Author(s) : Eric Rescorla
Filename : draft-rescorla-stir-fallback-00.txt
Pages : 11
Date : 2013-07-14
Abstract:
A major challenge with RFC 4474-style identity assertions has been
that SIP operates in highly mediated and interworked environments.
SIP requests may pass through gateways, policy enforcement devices or
other entities that receive SIP requests and effectively act as user
agents, re-initiating a request. In these circumstances,
intermediaries may recreate the fields protected by the RFC4474
signature, making end-to end integrity impossible. This document
describes a mechanism for two compliant endpoints to exchange
authentication data even in the face of intermediaries which remove
all additional call signaling meta-data or which translate from SIP
into protocols incapable of understanding identity meta-data (e.g.,
where one side is the PSTN).
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-rescorla-stir-fallback
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-rescorla-stir-fallback-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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