That may or may not work depending on type of NAT you are using. See Applicability Statement in STUN RFC3489.
Generally, more than one STUN device behind a single NAT increases likelihood of failure. The devices may compete for the same port number which makes some NATs change their behaviour in terms of STUN taxonomy from asymmetric to symmetric (thanks to Andrei for having debugged this tricky case). Then nothing will work, since the phones rely on asymmetric behaviour which does not hold. Some NATs also discard packets from local interface to its public IP address which breaks calls between two devices behind the same NATs.
-jiri
At 05:42 PM 5/31/2004, Ri Liang wrote:
Hello Martin,
Please advise if you have tested with more than 2 Grandstream devices in the SAME Nat ?
Ri Liang
Date: Sun, 30 May 2004 16:16:17 -0700 (PDT) From: Martin Winter mwinter@noaccess.com Subject: Re: [Serusers] stun - Grandstream To: Peter Boot peter.boot@ihug.com.au Cc: serusers@lists.iptel.org Message-ID: Pine.NEB.4.60.0405301614070.7226@picard.noaccess.com Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Sun, 30 May 2004, Peter Boot wrote:
Has anyone been able to get the Grandstream HT486 to work with MyStun or
any
other opensource stun server ?
No Problem here. I use the HT486 with stun 0.91 (Feb 21 - the latest release) from vovida.org
Source is at http://sourceforge.net/projects/stun/
- Martin
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