[Serusers] NAT & Madia Proxy.

[Greger V. Teigre]

You could move the test on INVITE and call to use_media_proxy(); until you have reached the sections routing to and from the gateway.  Of course, calls from the gw could be tested using if (src_ip == ip_address_of_gw). 
Anyway, the idea would be to wait with the call to use_media_proxy until you are sure that these calls are from/to the gateway.

Please remember that all incoming calls to UAs behind symmetric NAT and some combinations with UAs behind port-restricted NAT need to be proxied. If you only proxy gw calls, some ip-to-ip calls will fail.
g-)

---- Original Message ----
From: Mohamed Omar
To: serusers at lists.iptel.org
Sent: Monday, December 20, 2004 02:41 AM
Subject: [Serusers] NAT & Madia Proxy.

> I'm currently run ser with media proxy and it working fine if I force
> all calls throught the the media proxy... 
> 
> I want only calls destine to PSTN gateway to go through the media
> proxy for billing purpose and all other calls, I just want to fix the
> NAT and setup the call.  I dont want the  media to go throught my
> server if it not destine to PSTN network.   
> 
> Let me know how my config should be...Am new with SER and am stuck on
> this.  below is my configure for NAT. 
> 
> Thanks in Advance.
> 
> # -- nat ping --
> modparam("mediaproxy", "natping_interval", 10)
> modparam("mediaproxy", "mediaproxy_socket",
> "/var/run/mediaproxy.sock") 
> 
> # -------------------------  request routing logic -------------------
> 
> # main routing logic
> 
>         record_route();
>         # loose-route processing
> 
>         if (loose_route()) {
>                 t_relay();
>                 break;
>         };
> 
> # -- nat code --
>                 if (method == "BYE" || method == "CANCEL") {
>                         end_media_session();
>                 };
> 
>             if (client_nat_test("3")) {
>                         if (method == "REGISTER" || !
> search("^Record-Route:")) { 
>                                 fix_contact();
>                                 force_rport();
>                         };
>                 };
> 
>         if (method=="INVITE") {
>                         use_media_proxy();
>                         t_on_reply("1");
>                         setflag(6);
>        };
> 
> 
> 
>         # if the request is for other domain use UsrLoc
>         # (in case, it does not work, use the following command
>         # with proper names and addresses in it)
>         if (uri==myself) {
> 
>                 if (method=="REGISTER") {
> 
>                         save("location");
>                         break;
>                 };
> 
>   #            setflag(1);
> 
>                 # native SIP destinations are handled using our
> USRLOC DB 
>                  if (!lookup("location")) {
>         log (1, "**********************  Rewriting the host:port
> ***********************************"); 
> 
>                         rewritehostport ("PSTN Gateway Ip:5060");
>                 };
> 
>         };
>         if (method == "INVITE"){
>                 t_relay();
>                 sl_send_reply ("180", "Ringing");
>                 break;
>         }
>         if (!t_relay()) {
>                  sl_send_reply("404", "Not Found");
>                  break;
>         };
> 
> # -- nat code ----
> }
> 
> 
> onreply_route[1] {
>     if (status=~"(183)|2[0-9][0-9]") {
>         if (client_nat_test("1")) {
>             fix_contact();
>         };
>         use_media_proxy();
>     };
>     if (status=~"[3-4]0[0-9]") {
>         end_media_session();
>         break;
>     };
> }
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Post your free ad now! Yahoo! Canada Personals
> 
> 
> 
> 
> _______________________________________________
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