[OpenSIPS-Users] NAT

[Roberto Spadim]

humm i got the same problem but didn't found a solution
my solution was connect internet (public ip) directly to voip server, in
other words, i removed the opensip proxy and ntpproxy, but if anyone have
the solution could be very nice, i googled many examples but they don't work


2013/2/25 Muhammad Shahzad <shaheryarkh at gmail.com>

> You are missing one fundamental fact, that is you have to handle NAT for
> both signalling and media. From your description it looks signalling is
> going perfect (NAT is correctly handled), since you are able to establish
> call between two clients successfully, clients can register, make call,
> accept call and hangup call with your server. So main goal of NAT Traversal
> module is achieved.
>
> However, there is no media on call, so media NAT is not handled. NAT
> Traversal and / or NAT Helper modules may try to fix media NAT issues as
> well by manipulating SDP but in so many case they will be simply NOT enough
> for this purpose. Especially in case of 3g and corporate networks, which
> may have very very complex network typology with multiple layers of NAT (so
> called Nested NAT). So rtp / media proxy is the ONLY solution that can
> handle media across such complex networks.
>
> If you have really good sip clients with support for STUN / TURN / ICE
> etc. and you somewhat control over client data network environment, them
> you may fix media NAT issues up to 90% but in about 5-10% cases you will
> still need a media relay.
>
> Thank you.
>
>
> On Mon, Feb 25, 2013 at 11:51 PM, leo <uzcudunl at yahoo.it> wrote:
>
>> Hello,
>>
>> Unfortunately after reading the forum i've to open a new post about NAT
>> because i couldn't find a clear solution and information for my problem.
>> I've also read the NAT Traversal module documentation.
>>
>> I've an OpenSIPS server (version 1.8.2) on a Debian system (6.0.7 -
>> 2.6.32-5-686).
>> OpenSIPS was installed by the apt-get install using the apt.opensips.org
>> repository and configured with osipsconfig (residential script with
>> ALIASES,
>> AUTH, DBACC, DBUSRLOC and DIALOG).
>>
>> The UAs can register to the OpenSIPS server. They can place the call but i
>> 've no audio no video.
>> The OpenSIPS server has a public IP address (so, no natted).
>> The UAs could be natted or with public ip thru 3G.
>>
>> I wouldn't like to use rtproxy or mediaproxy cause the rtp traffic would
>> be
>> passing by those servers (am i correct?) adding jitter and latency.
>> I would set up the system in the way the the rtp traffic would be P2P.
>> Would
>> NAT Traversal be the solution? How it should be configured (i've already
>> enabled the required modules too)?
>>
>> Thanks a lot.
>>
>> Leo.
>>
>>
>>
>> --
>> View this message in context:
>> http://opensips-open-sip-server.1449251.n2.nabble.com/NAT-tp7584918.html
>> Sent from the OpenSIPS - Users mailing list archive at Nabble.com.
>>
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>
>
>
> --
> Muhammad Shahzad
> -----------------------------------
> CISCO Rich Media Communication Specialist (CRMCS)
> CISCO Certified Network Associate (CCNA)
> Cell: +49 176 99 83 10 85
> MSN: shari_786pk at hotmail.com
> Email: shaheryarkh at googlemail.com
>
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>


-- 
Roberto Spadim
SPAEmpresarial
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