Re: [Serusers] NATHelper - sr-users

20 Jan 2004

Hi Maxim,

I am highly interested for the ser/rtpproxy on NAT box solution.
May I know when that solution will be available?

Thanks,
Kevin

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Date: Tue, 20 Jan 2004 12:58:02 +0200
From: Maxim Sobolev &lt;sobomax(a)portaone.com&gt;
Subject: Re: [Serusers] NATHelper
To: Craig Graham &lt;craig(a)twolips-translations.co.uk&gt;
Cc: serusers(a)lists.iptel.org
Message-ID: &lt;400D09BA.70608(a)portaone.com&gt;
Content-Type: text/plain; charset=us-ascii; format=flowed

Craig Graham wrote:

...
  I have a very small setup; at the office there's a
few machines behind an
 Intertex IX66 NAT box, that does a fairly good job of SIP as far as we can
 tell from the few connections we've had to other sites.

 At home, I have a few machines behind a Linux box, doing NAT. All user
 machines are running MS Messenger.

 For a long time I've been trying to get a decent SIP service at home. I've
 tried both Partysip and Siproxd, both of which give me voice connections but
...
  no presence, IM, video or additional streams for
whiteboards or Messenger's
...
  "application sharing."

 I've been picking up snippets about NATHelper, which as I understand it
 allows SER to run on a NAT box and allow people to call across the NAT box.
...
  However, I've also seen a couple of messages that
suggest that as of October
...
  this module was only handling single audio streams,
which is the same as I
 have at the moment with Partysip and Siproxd. Is my understanding right and
...
  I'll have to wait a bit longer before trying SER,
or does it already do
 multistream? 
Multistream is video + audio, right? If so, then yes, only single audio
stream is supported at the moment, though it would be trivial to add
support for multistream as well. Please also note that currently I am
working on next version of nathelper/rtpproxy, which would allow
"bridging", i.e. the configuration when ser/rtpproxy runs on NAT box,
listens on both private and public addresses and relays SIP/RTP traffic
between public and private interfaces.

-Maxim