[Serusers] Record-Route behind NAT

I have a little problem, i need to force the UA (outside NAT with public IP address) to send the BYE messages to my Sip Server so I can account them in the acc table. I use record_route() to acomplish that but the thing is the Record-Route field in the message that an UA recieve, the IP address is the SIP SERVER LOCAL IP ADDRESS BEHIND NAT (Record-Route: <sip:5000022@192.168.0.2;ftag=192550680;lr=on>) which means, of course, that the message will not pass trough the SIP Server. How Could i force the server to write in the Record-Route field the valid IP address of my Sip Server (200.24.99.131)???? Example message sent by the Sip Proxy: RECEIVE TIME: 1420109 RECEIVE << 200.24.99.131:5060 SIP/2.0 180 Ringing Via: SIP/2.0/UDP 200.71.103.253:5060;rport=5060;branch=z9hG4bK725C92055C654839934F043974F39E1F From: Andres Parra <sip:3304076@ipsofactum.com>;tag=192550680 To: <sip:5000022@ipsofactum.com>;tag=2391513217 Contact: <sip:5000022@68.38.237.35:32805> Record-Route: <sip:5000022@192.168.0.2;ftag=192550680;lr=on> Call-ID: 31517648-DF5F-4A12-BE74-5B1026B4C39D(a)200.71.103.253 CSeq: 29855 INVITE Server: X-Lite release 1103m Content-Length: 0 Ser.cfg: # # $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $ # # simple quick-start config script # # ----------- global configuration parameters ------------------------ #debug=3 # debug level (cmd line: -dddddddddd) #fork=yes #log_stderror=no # (cmd line: -E) /* Uncomment these lines to enter debugging mode debug=7 fork=no log_stderror=yes */ check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) #port=5060 #children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- # Uncomment this if you want to use SQL database loadmodule "/usr/local/lib/ser/modules/mysql.so" loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/auth_db.so" loadmodule "/usr/local/lib/ser/modules/acc.so" loadmodule "/usr/local/lib/ser/modules/textops.so" # Uncomment this if you want to use SQL database # ----------------- setting module-specific parameters --------------- # -- usrloc params -- #modparam("usrloc", "db_mode", 0) # Uncomment this if you want to use SQL database # for persistent storage and comment the previous line modparam("usrloc", "db_mode", 2) # -- auth params -- # Uncomment if you are using auth module # modparam("auth_db", "calculate_ha1", yes) # # If you set "calculate_ha1" parameter to yes (which true in this config), # uncomment also the following parameter) # modparam("auth_db", "password_column", "password") # -- rr params -- # add value to ;lr param to make some broken UAs happy modparam("rr", "enable_full_lr", 1) # -- acc params - modparam("acc", "log_missed_flag", 3) modparam("acc", "log_level", 1) modparam("acc", "log_flag", 1) modparam("acc", "db_flag", 1) modparam("acc", "db_missed_flag", 3) # ------------------------- request routing logic ------------------- # main routing logic route{ # initial sanity checks -- messages with # max_forwards==0, or excessively long requests if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if ( msg:len > max_len ) { sl_send_reply("513", "Mensaje demasiado grande"); break; }; # prevents private ip space from being used if (search("^(Contact|m): .*(a)(192\.168\.|10\.|172\.16)&quot;)) { if (method=="REGISTER") { log(1, "LOG: Someone trying to register from private IP\n"); sl_send_reply("479", "Por favor no utilice direcciones IP privadas" ); break; }; }; # loose-route processing if (loose_route()) { t_relay(); break; }; # labeled all transaction for accounting setflag(1); # we record-route all messages -- to make sure that # subsequent messages will go through our proxy; that's # particularly good if upstream and downstream entities # use different transport protocol # record-route INVITES to make sure BYEs will visit our server too if (method=="INVITE") record_route(); # 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=~"ipsofactum.com" ){#|| !(uri=~"^sip:(192\.168\.|10\.|172\.16)")) { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!www_authorize("ipsofactum.com", "subscriber")) { www_challenge("ipsofactum.com", "0"); break; }; setflag(3); save("location"); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")){ #&& !lookup("subscribers")) { # call invitations to off-line users are reported using the # acc_request action; to avoid duplicate reports on request # retransmissions, request is processed statefuly (t_newtran, # t_reply) if ((method=="INVITE" || method=="ACK") && t_newtran() ) { t_reply("404", "Usuario no registrado!, contacte el directorio de usuarios registrados"); acc_db_request("404 Not Found","missed_calls"); break; }; # all other requests to off-line users are simply replied # statelesslyeth0 and no reports are issued #sl_send_reply("404", "Usuario no existente!, contacte el directorio de usuarios suscritos"); #break; } else { # user on-line; report on failed transactions; mark the # transaction for reporting using the same number as # configured above; if the call is really missed, a report # will be issued setflag(3); # forward to user's current destination t_relay(); break; }; }; # forward to current uri now; use stateful forwarding; that # works reliably even if we forward from TCP to UDP if (!t_relay()) { sl_reply_error(); }; } _______________________________ Do you Yahoo!? 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