[SR-Users] Kamailio and NAT

[Daniel-Constantin Mierla]

Hello,

can you get the SIP trace with all the packets of such dialog outside of
the NAT router? It will help to see the headers and based on that we may
be able to provide a solution.

Cheers,
Daniel

On 12/01/16 19:13, Nelson Migliaro wrote:
> Thank you for your answer.
>
> The problem I have is with internet router doing to PAT to SIP port.
> I am already advertising public IP but unfortunately I cant know the
> public port I am using.
>
> 2015-12-28 18:17 GMT+01:00 Alexandru Covalschi <568691 at gmail.com
> <mailto:568691 at gmail.com>>:
>
>     AFAIK bye is usually sent to the address stored in record_route.
>     Try setting changing record_route() to
>     record_route_preset("PUBLICIP:5060;nat=yes:)
>
>     2015-12-23 16:28 GMT+02:00 Nelson Migliaro <eng.migliaro at gmail.com
>     <mailto:eng.migliaro at gmail.com>>:
>
>          
>         Hello,
>
>         I am running Kamailio behind NAT.
>
>         Kanailio has a private IP and I am relaying NAT to internet
>         router.
>
>         I am using:
>
>         - #!define WITH_NAT
>         - listen=udp:PRIVATE-IP:5060 advertise PUBLIC-IP:5060
>
>         - Patched RTP proxy including the advertise option
>
>         And everything goes fine. I can make calls and have two way audio.
>
>         The problem begins when the callee ends the call. BYE is not
>         received in Kamailio (caller)
>
>         I included the public IP using "add_contact_alias" because
>         "set_contact_alias" was not adding the public IP. I included
>         this in in NATDETECT (pre loaded router)
>
>                 if(is_first_hop()) {
>                     xlog("L_NOTICE","Metodo: $rm \n");
>                     xlog("L_NOTICE","is first hop\n");
>                     #set_contact_alias();
>                          if (!add_contact_alias("PUBLIC-IP", "$Rp",
>         "udp")) {
>                          xlog("L_ERR", "Error in aliasing contact $ct\n");
>                             send_reply("400", "Bad request");
>                                     exit;
>                             }
>                 }
>
>         I think the problem is related to destination that BYE is sent
>         by the vendor. From what I see IP and port is taken from
>         advertised in contact (PUBLIC-IP and 5060).
>         The problem is that internet router changes the source port.
>
>         Contact: <sip:999999999 at PRIVATE-IP:5060;alias=PUBLIC-IP~5060~1>
>
>         --- Is it correcto to add_contact_alias("PUBLIC-IP", "$Rp",
>         "udp") in order to received new transactions or should I
>         follow a different procedure???
>
>         Thank you
>
>
>
>
>         _______________________________________________
>         SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
>         mailing list
>         sr-users at lists.sip-router.org
>         <mailto:sr-users at lists.sip-router.org>
>         http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
>
>
>
>     -- 
>     Alexandru Covalschi
>     ABRISS-Solutions
>     VoIP engineer and system administrator
>     phone: +37367398493 <tel:%2B37367398493>
>     web: http://abs-telecom.com/
>
>     _______________________________________________
>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>     list
>     sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
>
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu

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