[Devel] [Users] nathelper/rtpproxy when both SIP UA are behind same NAT

[Norman Brandinger]

Hello Rafael,

I took a very quick look at your conifguration and noticed that you have 
commented out the "nat_flag" line.  This setting is documented here: 
http://www.openser.org/docs/modules/1.1.x/registrar.html#AEN103  I 
believe that you should, at a minimum, uncomment this line.

# modparam("registrar", "nat_flag", 6)

Your configuration looks as though it is based on information from the 
iptel.org site.  I would suggest that you also review the NAT example 
configuration from the onsip.org site.  The onsip.org configurations are 
a little more current.  The nice part of the onsip.org configurations is 
that they are provided with line-by-line explanations.

Regards,
Norm


Rafael R. GV wrote:

> Hi
> thank you!, now i am using Openser, it was easy to move from ser, just 
> some minor changes like 'break' to 'return' etc, my nathelper 
> implementation is based on a ser example and it works very well, just 
> made some minor changes to set flag 6 and flag 7 to 'Register' and 
> 'Invites' when 'nat_uac_test("19")' in order to try Tavis code 
> snippet, in my tests there is no audio when reset flag 6 and 7 after 
> detected the two clients behind the same NAT and can't hungup or 
> cancel calls properly, please someone see my cfg attached and send 
> some advice, what I am missing?
>
> thanks
> rafael
>
>
>
> On 12/7/05, *Norman Brandinger* <norm at goes.com <mailto:norm at goes.com>> 
> wrote:
>
>     Hi Rafael,
>
>     You would use the "example code snippet" when you want to decide
>     whether
>     or not to use rtpproxy or mediaproxy based on the fact that both the
>     caller and the callee are behind the same NAT device.  Please
>     review the
>     mailing lists as this topic has been discussed many times.
>
>     I added some additional comments in regard to the setting of flags
>     2 and
>     3 in the posted example at:
>     http://openser.org/dokuwiki/doku.php?id=avp_examples
>
>     Generally, I have found that if OpenSER fails to start with an error
>     indicating that the function can't be found, it's time to find the
>     correct module to add.
>
>     In response to your last question "etc." I suggest that you review the
>     three web sites: openser.org <http://openser.org>, iptel.org
>     <http://iptel.org> and onsip.org <http://onsip.org>.  The last one has
>     some really great material that explains alot.
>
>     Regards,
>     Norm
>
>
>     Rafael R. GV wrote:
>     > Hi
>     > I am using nathelper/rtpproxy in ser , please see my ser.cfg
>     attached
>     > and tell me where do I have to use this code snippet?  where did you
>     > set flags 2 and 3?, what other modules I need?, etc.
>     >
>     > thank you
>     > Rafael
>     > Lima-Peru
>     >
>
>
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