[Users] test openser behind NAT not work

[raviprakash sunkara]

Hi Somsak
The Same issue is faced ,

The in ur  FireWall/router, ...
In Router , openSER system is in DMZ mode, i'm Sure , Even through u did
like that...

ADSL(A) Router is mis place the HeaderContact

Change the Router... with Support the SIP with NAT... Cisco , Linksys, Zoom,

can u check the Dialog file UAC ( x-lite 3.0) ... U can see there for
invited... Ack and Bye Contact Header is misplacing into the private
ip,,,,,,

Keep OpenSER direct to the Internet ( for testing ) ............
it will  work finely........

On 12/2/06, somsak vattanavakin <somsak at infowavenet.com> wrote:
>
> Dear All
>
>
>    i will setup openser behind NAT like these
>
>
>
> OPENSER ---> ADSL ROUTER(A) <---> INTERNET  <---> ADSL ROUTER(B)<-- UAC(1)
>                                                                  <--
> UAC(2)
>
>
>
> for UAC to talk each others in the same network with OPENSER server  and
> try to REGISTER AND INVITE IT OK .
>
> but if i use UACs that located behind ADSL ROUTER(B) for REGISTER it OK
> when UAC(1) INVITE UAC(2) it RING and session established can heard sound
>
> but after about 30 second the CALLEE UAC(2) is HANG UP while
> CALLER  UAC(1)
> still show established
>
> i saw some mail said that the problem may occour from ADSL ROUTER ITSELF
> (AGL problem)or some say that ACK problem.  if i connect UAC(1) and UAC(2)
> through ADSL ROUTER(B) to iptel.org and i use UAC(1) INVITE UAC(2) it work
> no problem  for 30 second disconnection . also if i use UAC(1) and UAC(2)
> conect to iptel.org through ADSL ROUTER(A) no problem . AT this point
> can I CONCLUDE THAT BOTH ADSL ROUTER  NO PROBLEM FOR SIP CONNECTION. is it
> TRUE ??
>
>
> Next i saw from LOG file it seem no ACK MESSAGE and error like these
> --  LOG FILE -------------
> ERROR: tcp_blocking_connect: poll error: flags 18
> ERROR: tcp_blocking_connect: SO_ERROR (111) Connection refused
> ERROR: tcpconn_connect: tcp_blocking_connect failed
> ERROR: tcp_send: connect failed
> ---
>
> for simply NAT testing i use openser.cfg like these
>
> ---------- OPENSER.CFG ---------
>   if (!method=="REGISTER")
>      record_route();
>   if (loose_route()) {
>         # mark routing logic in request
>         append_hf("P-hint: rr-enforced\r\n");
>         route(1);
>      };
>
>   if (!uri==myself) {
>         # mark routing logic in request
>         append_hf("P-hint: outbound\r\n");
>         route(1);
>         };
>
>         if (uri==myself) {
>         if (method=="REGISTER") {
>
>                 if (!www_authorize("infowavenet.com", "subscriber")) {
>                                 www_challenge("infowavenet.com", "0");
>                                 exit;
>                         };
>                         fix_nated_register();
>                         save("location");
>                         exec_msg("cat >> /tmp/test");
>                         exit;
>                 };
>
>                 lookup("aliases");
>                 if (!uri==myself) {
>                         append_hf("P-hint: outbound alias\r\n");
>                         route(1);
>                 };
>
>                 # native SIP destinations are handled using our USRLOC DB
>                 if (!lookup("location")) {
>                         sl_send_reply("404", "Not Found");
>                         exit;
>                 };
>                 append_hf("P-hint: usrloc applied\r\n");
>         };
>         route(1);
> }
>
>
> route[1] {
>         # send it out now; use stateful forwarding as it works reliably
>         # even for UDP2TCP
>             fix_nated_contact();
>         if(method == "INVITE")
>           { fix_nated_sdp("3"); }
>         if (!t_relay()) {
>         sl_reply_error();
>         } else { exec_msg("cat >> /tmp/test");}
>         exit;
> }
> ------------
>
>
> MY QUESTION:
>
>   1) can openser server is BEHIND NAT ADSL ROUTER and receive Call from
> UAC from other NAT ROUTER .
>
>   2) if so what the problem that CALLEE HANGUP every 30 seconds
>    ( i use XLITE v.3 for UAC )
>
>   3) if it possible can you fix openser.cfg that work for this situation
>
>
>
> Best
>
> Somsak Vattanavakin
>
> _______________________________________________
> Users mailing list
> Users at openser.org
> http://openser.org/cgi-bin/mailman/listinfo/users
>



-- 
Thanks and Regards
Ravi Prakash Sunkara
ravi.sunkara at hyperion-tech.com
M:+91 9985077535
O:+91 40 23114549
F:+91 40 40208727
ravi.sunkara at hyperion-tech.com
www.hyperion-tech.com
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