IETF Logo Mail Archive

Re: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb

Christer Holmberg <christer.holmberg@ericsson.com> Sat, 27 April 2013 14:17 UTC

Return-Path: <christer.holmberg@ericsson.com>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 6DB4221F98A1 for <rtcweb@ietfa.amsl.com>; Sat, 27 Apr 2013 07:17:18 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.449
X-Spam-Level:
X-Spam-Status: No, score=-5.449 tagged_above=-999 required=5 tests=[AWL=0.499, BAYES_00=-2.599, HELO_EQ_SE=0.35, HTML_MESSAGE=0.001, MIME_8BIT_HEADER=0.3, RCVD_IN_DNSWL_MED=-4]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mSML1Nt0GwPk for <rtcweb@ietfa.amsl.com>; Sat, 27 Apr 2013 07:17:17 -0700 (PDT)
Received: from mailgw2.ericsson.se (mailgw2.ericsson.se [193.180.251.37]) by ietfa.amsl.com (Postfix) with ESMTP id 3050721F98A2 for <rtcweb@ietf.org>; Sat, 27 Apr 2013 07:17:17 -0700 (PDT)
X-AuditID: c1b4fb25-b7f366d000004d10-08-517bddecbab3
Received: from ESESSHC011.ericsson.se (Unknown_Domain [153.88.253.125]) by mailgw2.ericsson.se (Symantec Mail Security) with SMTP id C1.51.19728.CEDDB715; Sat, 27 Apr 2013 16:17:16 +0200 (CEST)
Received: from ESESSMB209.ericsson.se ([169.254.9.167]) by ESESSHC011.ericsson.se ([153.88.183.51]) with mapi id 14.02.0328.009; Sat, 27 Apr 2013 16:17:15 +0200
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Iñaki Baz Castillo <ibc@aliax.net>, Tim Panton <tim@phonefromhere.com>
Thread-Topic: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb
Thread-Index: AQHOQc2dBvHgQupeBUKbTywOt/T6cpjnAcgAgABdtoCAAOBNgIAAG7QAgAAAtICAAcQHzg==
Date: Sat, 27 Apr 2013 14:17:15 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B1C363631@ESESSMB209.ericsson.se>
References: <3FA2E46D-C98E-4FC0-9F1D-AD595A861CE1@iii.ca> <74300615-2293-4DCE-82A7-475F1A5A8256@gmail.com> <91B4F744-2201-4361-A8D8-7D36F47B865C@cisco.com> <CALiegfnqW26gEMYNpjJyzu=Nd6z9wCjvZbuY1N2tYvbfQiHyPA@mail.gmail.com> <95219856-8365-4A7E-BD0B-4EECE8868498@phonefromhere.com>, <CALiegfkPtAhEq3yJqZ73sUYfkV1etKt53DE8C0jjYDu0HV1LYw@mail.gmail.com>
In-Reply-To: <CALiegfkPtAhEq3yJqZ73sUYfkV1etKt53DE8C0jjYDu0HV1LYw@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Content-Type: multipart/alternative; boundary="_000_7594FB04B1934943A5C02806D1A2204B1C363631ESESSMB209erics_"
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrELMWRmVeSWpSXmKPExsUyM+Jvre6bu9WBBs2rxCym77OxWPuvnd3i 4vZbjA7MHuca3rN7LFnyk8ljyaRGtgDmKC6blNSczLLUIn27BK6MD/uesRccla+43DCHvYHx uVQXIyeHhICJxLn9i9ggbDGJC/fWA9lcHEIChxklFnR2MUE4SxglmtuesXQxcnCwCVhIdP/T BmkQEUiSWLd2FTuIzSygKnH+0DlGEFtYwFXiYcd6dogaN4nmTS3MEHaYRMehx2A1LED1zVuu MIHYvAK+EpNO3GeF2PWMSeLt5EmsIAlOgUCJXYcbwBoYga77fmoNE8QycYlbT+YzQVwtILFk z3lmCFtU4uXjf6wQNfkS96d9Y4NYIChxcuYTlgmMIrOQtM9CUjYLSRlEXE/ixtQpbBC2tsSy ha+ZIWxdiRn/DrEgiy9gZF/FyJ6bmJmTXm60iREYTwe3/FbdwXjnnMghRmkOFiVx3hlSlYFC AumJJanZqakFqUXxRaU5qcWHGJk4OKUaGKeKnFdR+eHoc/b49NhoCd/6XRxSPzJV6jzkCuS3 v12qpKma1j5j2y3m/scm9WsMuJUT9sSuLY/Ojd1SENK88Hb6wy0z9n9fsfX6tVr+AP0Nu1J8 w5p4n0SIN5bNsJSeodq75afk0xke3H/cX1269npv7v9O3bcpq5MirM/q2phvZT24tDGwXoml OCPRUIu5qDgRAHgw0C91AgAA
Cc: "rtcweb_ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 27 Apr 2013 14:17:18 -0000

Hi,

As I've mentioned before, we should really try to avoid solutions that require intermediaries to send reINVITEs - or, more general, send SDP offers.

Regards,

Christer

Sent from Windows using TouchDown (www.nitrodesk.com)

-----Original Message-----
From: Iñaki Baz Castillo [ibc@aliax.net]
To: Tim Panton [tim@phonefromhere.com]
CC: rtcweb@ietf.org [rtcweb@ietf.org]
Subject: Re: [rtcweb] SDP Security Descriptions (RFC 4568) and RTCWeb

The problem is when EKT is also used and the gateway must send SIP reINVITE by itself as the proposed "solution diagram" shows. That is not just a media gateway.

--
Iñaki Baz Castillo
<ibc@aliax.net<mailto:ibc@aliax.net>>

El 26/04/2013 15:16, "Tim Panton" <tim@phonefromhere.com<mailto:tim@phonefromhere.com>> escribió:

On 26 Apr 2013, at 12:37, Iñaki Baz Castillo wrote:


Such a solution requires a very expensive gateway. Good for vendors but bad for all the rest.

I don't understand why the DTLS gateway would be so expensive. It is _exactly_ the same
(conceptually) as the ICE processing - you filter off a few UDP packets from the stream, do some
stuff, send replies then once you are happy you punt some dynamic settings back up to the (s)rtp
layer.

T.

v2.23.0 | Report a Bug | By Email