Re: [rtcweb] Resolving RTP/SDES question in Paris
Magnus Westerlund <magnus.westerlund@ericsson.com> Tue, 10 April 2012 09:44 UTC
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Date: Tue, 10 Apr 2012 11:44:08 +0200
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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To: Roman Shpount <roman@telurix.com>
References: <4F4759DC.7060303@ericsson.com> <CAD5OKxuiApLKRASc2YuBfkM_8h8wGDPPQ3TdOYGum2yauidA5A@mail.gmail.com> <4F6AECC6.8020004@alvestrand.no> <CAD5OKxsSUeMFYXZMZVqQFWdeEB=30HJuJ=mP9GaYkksBmp1mOA@mail.gmail.com> <CABkgnnW3AyREj9T2zDzJf64Bhjdfc1K8-ebZe-V0a-tbiTYEpw@mail.gmail.com> <CAD5OKxswXun5nVhKcN2oXkTdr-wKuOB7PhbXgdGSE4RexhTd3A@mail.gmail.com> <CABkgnnUZgtgEWZvYiyxDVNsDRDNsdr30Pd38cZeR18UB1Z04mw@mail.gmail.com> <CAD5OKxuLY2hZVqmna_GmpcBdFbZiP6ybKTJ19DN4f25mabLTrg@mail.gmail.com> <CA+9kkMDFEmJVuZu_BCBvU34YbWB-0CCR7SbKt-3PF=XV0vs3JQ@mail.gmail.com> <CAD5OKxu=JPJyWWPii=t8JGKAKTqVvB5JFQJ-jBBnXmiK4xpPEQ@mail.gmail.com> <CA+9kkMALJW2H5bM9yiykfBUqWoZifkZWpve=ih+ors1u9mz=7A@mail.gmail.com> <CAD5OKxva=zm0NUwUE0mhaEOmrDYCvtn3kP701NeRbiBRKhPFJQ@mail.gmail.com> <13C620B3-1297-4212-B61C-5643E08E9748@acmepacket.com> <CAD5OKxt_i2eJ1hK6tR7aKUt4T+6sitfxdMaBfN-ASR6-UPRE2A@mail.gmail.com> <4F6CC346.9000703@alvestrand.no> <CAD5OKxtNLawChET2AJmokJBkGQN-MCVfecqQrf+SgYPum+OuCg@mail.gmail.com >
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Subject: Re: [rtcweb] Resolving RTP/SDES question in Paris
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On 2012-03-29 08:20, Roman Shpount wrote: > > On Fri, Mar 23, 2012 at 2:39 PM, Harald Alvestrand <harald@alvestrand.no > <mailto:harald@alvestrand.no>> wrote: > > __ > It seems to me that you are arguing that the scenarios in section > 4.1 of the use cases document do not cover that specific case, and I > think you are right in that; the list is: > > The following considerations are applicable to all use cases: > o Clients can be on IPv4-only > o Clients can be on IPv6-only > o Clients can be on dual-stack > o Clients can be on wideband (10s of Mbits/sec) > o Clients can be on narrowband (10s to 100s of Kbits/sec) > o Clients can be on variable-media-quality networks (wireless) > o Clients can be on congested networks > o Clients can be on firewalled networks with no UDP allowed > o Clients can be on networks with cone NAT > o Clients can be on networks with symmetric NAT > > Now, there are two ways to interpret this omission: > > - The WG did not think of that use case when the list was created > - The WG does not want that use case on the list because it > constrains the solution space too much > > If (re)opening this issue, I think I'd find myself in the "do not > want that use case" camp. > > > I do not recall this use case ever being discussed on the working group, > so I would assume the current situation is due to WG not thinking about > this case when the list was created. Hi, If I followed this thread I do believe that we do have a use case description that puts in requirements for controlling how the media traffic flows in and out of an enterprise when using WebRTC: 4.2.4. Simple Video Communication Service, enterprise aspects 4.2.4.1. Description This use-case is similar to the Simple Video Communication Service use-case (Section 4.2.1). What is added is aspects when using the service in enterprises. ICE is assumed in the further description of this use-case. An enterprise that uses a RTCWEB based web application for communication desires to audit all RTCWEB based application session used from inside the company towards any external peer. To be able to do this they deploy a TURN server that straddle the boundary between the internal network and the external. The firewall will block all attempts to use STUN with an external destination unless they go to the enterprise auditing TURN server. In cases where employees are using RTCWEB applications provided by an external service provider they still want to have the traffic to stay inside their internal network and in addition not load the straddling TURN server, thus they deploy a STUN server allowing the RTCWEB client to determine its server reflexive address on the internal side. Thus enabling cases where peers are both on the internal side to connect without the traffic leaving the internal network. It must be possibele to configure the browsers used in the enterprise with network specific STUN and TURN servers. This should be possible to achieve by autoconfiguration methods. The RTCWEB functionality will need to utilize both network specific STUN and TURN resources and STUN and TURN servers provisioned by the web application. My interpretation of this and the discussion I can remember is that an enterprise would configure the browsers for their internal computers with a TURN server sitting on the border between the inside and outside. That way one can at least log and audit which communication that occurs using WebRTC from the inside to the outside. The enterprise can also select to record media flows in the TURN server. This still leaves the question if one can get to the keys. That will depend on the mechanism used for keying and its transport and what methods have been put in place to capture such traffic. Cheers Magnus Westerlund ---------------------------------------------------------------------- Multimedia Technologies, Ericsson Research EAB/TVM ---------------------------------------------------------------------- Ericsson AB | Phone +46 10 7148287 Färögatan 6 | Mobile +46 73 0949079 SE-164 80 Stockholm, Sweden| mailto: magnus.westerlund@ericsson.com ----------------------------------------------------------------------
- [rtcweb] Resolving RTP/SDES question in Paris Magnus Westerlund
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Randell Jesup
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Eric Rescorla
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Eric Rescorla
- Re: [rtcweb] Resolving RTP/SDES question in Paris Randell Jesup
- Re: [rtcweb] Resolving RTP/SDES question in Paris Tim Panton
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Eric Rescorla
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Martin Thomson
- Re: [rtcweb] Resolving RTP/SDES question in Paris Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Bernard Aboba
- Re: [rtcweb] Resolving RTP/SDES question in Paris Martin Thomson
- Re: [rtcweb] Resolving RTP/SDES question in Paris Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ejzak, Richard P (Richard)
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Randell Jesup
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Bernard Aboba
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ted Hardie
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ted Hardie
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Cameron Byrne
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ejzak, Richard P (Richard)
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ejzak, Richard P (Richard)
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Cameron Byrne
- Re: [rtcweb] Resolving RTP/SDES question in Paris Tim Panton
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ted Hardie
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Tim Panton
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Lorenzo Miniero
- Re: [rtcweb] Resolving RTP/SDES question in Paris Lorenzo Miniero
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Tim Panton
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Jim Barnett
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Eric Rescorla
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- [rtcweb] RTP-IPSec vs SRTP-DTLS [was RE: Resolvin… Ravindran, Parthasarathi
- Re: [rtcweb] RTP-IPSec vs SRTP-DTLS [was RE: Reso… Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hutton, Andrew
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- [rtcweb] Telling the user the connection is secur… Harald Alvestrand
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Bernard Aboba
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Telling the user the connection is s… Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Iñaki Baz Castillo
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Eric Rescorla
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- Re: [rtcweb] Telling the user the connection is s… Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Jim Barnett
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Igor Faynberg
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Martin Thomson
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Martin Thomson
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ted Hardie
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ted Hardie
- Re: [rtcweb] Resolving RTP/SDES question in Paris Dan Wing
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Ravindran, Parthasarathi
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hutton, Andrew
- Re: [rtcweb] Resolving RTP/SDES question in Paris Dan Wing
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Dan Wing
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- Re: [rtcweb] Resolving RTP/SDES question in Paris Hadriel Kaplan
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Richard L. Barnes
- Re: [rtcweb] Resolving RTP/SDES question in Paris Magnus Westerlund
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount
- Re: [rtcweb] Resolving RTP/SDES question in Paris Harald Alvestrand
- Re: [rtcweb] Resolving RTP/SDES question in Paris Roman Shpount