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Re: [secdir] review of draft-ietf-sipcore-reinvite-06.txt

Stephen Kent <kent@bbn.com> Sun, 07 November 2010 03:26 UTC

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Date: Sat, 06 Nov 2010 23:25:48 -0400
To: Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>
From: Stephen Kent <kent@bbn.com>
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Cc: "secdir@ietf.org" <secdir@ietf.org>, "gao.yang2@zte.com.cn" <gao.yang2@zte.com.cn>, "pkyzivat@cisco.com" <pkyzivat@cisco.com>, Christer Holmberg <christer.holmberg@ericsson.com>, "tim.polk@nist.gov" <tim.polk@nist.gov>, "rjsparks@nostrum.com" <rjsparks@nostrum.com>
Subject: Re: [secdir] review of draft-ietf-sipcore-reinvite-06.txt
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Gonzalo,

Sorry for my tardy reply.

I like your changes, with a minor edit at the end:

"In particular, in order not to reduce the security level for a given
session, re-INVITEs and UPDATE requests SHOULD be secured using a 
mechanism equivalent to or stronger than the initial INVITE request 
that created the
session. For example, if the initial INVITE request was end-to-end
integrity protected or encrypted, subsequent re-INVITEs and UPDATE
requests should also be so."


Steve

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