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Re: [MMUSIC] RTSP through NATs
Magnus,
I will not be able to follow this teleconference,
however here is some input on RTSP & NATs
we have implemented STUN as a way to make RTSP with RTP/UDP transport work through NATS.
It works really fine (with a minor problem for long pauses).
Actually when comparing with ALGs I would rather strongly advocate for STUN,
to the point of discouraging ALG usage (as a cure for NAT)
to make a long story short it scales much better and
does not require *any* control on the NATs (vs install/run ALG).
regards,
Philippe Gentric
Software Architect
Philips MP4Net
philippe.gentric@philips.com
http://www.platform4.philips.com
To: IETF MMUSIC WG <mmusic@ietf.org>
cc: (bcc: Philippe Gentric/MP4-SUR/CE/PHILIPS)
Subject: [MMUSIC] RTSP telecon 22 of january - Agenda
Magnus Westerlund Classification:
<magnus.westerlund@era.ericsson
.se>
Sent by:
mmusic-admin@ietf.org
13/01/2003 11:04
Hi
In a little more than a week it is time for the next RTSP telecon. All
participants in last meeting will automatically receive conference
details in a few days. Others who wants to participate please send a
request to me.
---------------------------------
Agenda 22nd of January 2003
18.00-19.30 CET (GMT+1)
- Follow up on last telecon
* 304 and REDIRECT "*" text proposal.
- Extension mechanism
Read the parts in the draft that describes the different parts
of the mechanism. For discussion: the whole solution
* Feature tags
- play.basic
- registration
* Require header
* Proxy-require header
- Shall it really require server to support these? See SIP, RFC
3261 which uses Proxy-Require only for proxies.
* Supported header
- As in SIP?
- Which methods, see table 4 & 5?
* Unsupported header
- Options
* Use of "Supported" header.
* "*" URL and proxies
- Editorship of the draft
- In case we have time:
* Use of destination parameter in Transport header:
http://rtsp.org/bug507347
* RTSP and NATs
What solutions exist to make RTSP traverse NATs without
ALG.
http://rtsp.org/bug513888
- STUN? See
<http://www.ietf.org/internet-drafts/draft-ietf-midcom-stun-05.txt>
- ALG recommendations?
- Next meeting
---------------------------------
Best Regards
Magnus Westerlund
Multimedia Technologies, Ericsson Research ERA/TVA/A
----------------------------------------------------------------------
Ericsson AB | Phone +46 8 4048287
Torshamsgatan 23 | Fax +46 8 7575550
S-164 80 Stockholm, Sweden | mailto: magnus.westerlund@era.ericsson.se
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