----- Original Message ----- From: "Andrei Pelinescu-Onciul" andrei@iptel.org To: "KM" tank30@hotmail.com Cc: serusers@lists.iptel.org Sent: Wednesday, November 02, 2005 8:43 PM Subject: Re: [Serusers] Ser+Media proxy

On Nov 02, 2005 at 20:15, KM tank30@hotmail.com wrote:

...

This is the plain text version. Sorry!

I have installed SER 0.9.3.2 and media proxy 1.2.1 on the same machine. The machine is on public network. Calls work ok except when I have a UA on a LAN behind NAT calling to a UA that is in the same LAN. In this case I get :

| username | contact | received |

| 22000001 | sip:22000001@192.168.1.7:5060 | sip:xxx.xxx.xxx.xxx:5060 | | 22000002 | sip:22000002@192.168.1.6:5060 | sip:xxx.xxx.xxx.xxx:2557 |

The number that takes up port 5060 on the NAT server,which is 22000001 can call the other UA but not the other way round. 22000002 can only receive calls.

Without the ser config and packet dumps is hard to say for sure, but try adding a force_rport() in your config.

Andrei

Andrei thanks for the reply. I already have a force_rport(). I include the ser.config to check . How do i get the packet dumps?

From syslog? As you can tell i am a newbie in SER ..

debug=3 fork=no log_stderror=yes

listen=***.***.141.179 port=5060 children=8

dns=no rev_dns=no fifo="/tmp/ser_fifo" fifo_db_url="mysql://ser:*******@localhost/ser"

loadmodule "/usr/lib/ser/modules/mysql.so" loadmodule "/usr/lib/ser/modules/sl.so" loadmodule "/usr/lib/ser/modules/tm.so" loadmodule "/usr/lib/ser/modules/rr.so" loadmodule "/usr/lib/ser/modules/maxfwd.so" loadmodule "/usr/lib/ser/modules/usrloc.so" loadmodule "/usr/lib/ser/modules/registrar.so" loadmodule "/usr/lib/ser/modules/auth.so" loadmodule "/usr/lib/ser/modules/auth_db.so" loadmodule "/usr/lib/ser/modules/uri.so" loadmodule "/usr/lib/ser/modules/uri_db.so" loadmodule "/usr/lib/ser/modules/domain.so" loadmodule "/usr/lib/ser/modules/mediaproxy.so" loadmodule "/usr/lib/ser/modules/nathelper.so" loadmodule "/usr/lib/ser/modules/textops.so"

#KM added module loadmodule "/usr/lib/ser/modules/exec.so"

modparam("auth_db|domain|uri_db|usrloc", "db_url", "mysql://ser:*******@localhost/ser") modparam("auth_db", "calculate_ha1", 1) modparam("auth_db", "password_column", "password")

modparam("nathelper", "rtpproxy_disable", 1) modparam("nathelper", "natping_interval", 0)

modparam("mediaproxy","natping_interval", 30) modparam("mediaproxy","mediaproxy_socket", "/var/run/mediaproxy.sock") modparam("mediaproxy","sip_asymmetrics","/usr/etc/ser/sip-clients") modparam("mediaproxy","rtp_asymmetrics","/usr/etc/ser/rtp-clients")

modparam("usrloc", "db_mode", 2)

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

modparam("rr", "enable_full_lr", 1)

route { # ----------------------------------------------------------------- # Sanity Check Section # ----------------------------------------------------------------- if (!mf_process_maxfwd_header("10")) { sl_send_reply("483", "Too Many Hops"); break; };

if (msg:len > max_len) { sl_send_reply("513", "Message Overflow"); break; };

# ----------------------------------------------------------------- # Record Route Section # ----------------------------------------------------------------- if (method=="INVITE" && client_nat_test("3")) { record_route_preset("***.***.141.179;nat=yes"); log(1,"Record Route section:NAT found, changing ip to ***.***.141.179 \n"); } else if (method!="REGISTER") { record_route(); };

# ----------------------------------------------------------------- # Call Tear Down Section # ----------------------------------------------------------------- if (method=="BYE" || method=="CANCEL") { end_media_session(); };

# ----------------------------------------------------------------- # Loose Route Section # ----------------------------------------------------------------- if (loose_route()) {

if (has_totag() && (method=="INVITE" || method=="ACK")) {

if (client_nat_test("3") || search("^Route:.*;nat=yes")) { setflag(6); use_media_proxy(); log(1,"route:NATED caller in loose route \n"); }; };

route(1); break; };

# ----------------------------------------------------------------- # Call Type Processing Section # ----------------------------------------------------------------- if (uri!=myself) { route(4); route(1); break; };

if (method=="CANCEL") { route(1); break; } else if (method=="INVITE") { route(3); break; } else if (method=="REGISTER") { route(2); break; };

lookup("aliases"); if (uri!=myself) { route(4); route(1); break; };

if (!lookup("location")) { sl_send_reply("404", "User Not Found"); break; };

route(1); }

route[1] {

# ----------------------------------------------------------------- # Default Message Handler # -----------------------------------------------------------------

t_on_reply("1");

if (!t_relay()) {

if (method=="INVITE" || method=="ACK") { end_media_session(); };

sl_reply_error(); }; }

route[2] {

# ----------------------------------------------------------------- # REGISTER Message Handler # ----------------------------------------------------------------

sl_send_reply("100", "Trying");

if (!search("^Contact:[ ]**") && client_nat_test("7")) { setflag(6); fix_nated_register(); force_rport(); log(1,"route[2]REGISTER:Nated registrar \n"); };

if (!www_authorize("","subscriber")) { log(1,"route[2]REGISTER: www_challenge sends 401 \n"); www_challenge("","0"); break; };

if (!check_to()) { log(1,"route[2]REGISTER: check_to sends 401 \n"); sl_send_reply("401", "Unauthorized"); break; };

consume_credentials();

if (!save("location")) { sl_reply_error(); }; }

route[3] {

# ----------------------------------------------------------------- # INVITE Message Handler # -----------------------------------------------------------------

if (!proxy_authorize("","subscriber")) { proxy_challenge("","0"); break; } else if (!check_from()) { sl_send_reply("403", "Use From=ID"); break; };

consume_credentials();

if (client_nat_test("3")) { setflag(7); force_rport(); fix_nated_contact(); log(1,"route[3]INVITE:Called number is NATed \n"); };

lookup("aliases"); if (uri!=myself) { route(4); route(1); break; };

if (!lookup("location")) { sl_send_reply("404", "User Not Found"); break; };

route(4); route(1); }

route[4] {

# ----------------------------------------------------------------- # NAT Traversal Section # -----------------------------------------------------------------

if (isflagset(6) || isflagset(7)) { use_media_proxy(); }; }

onreply_route[1] {

if ((isflagset(6) || isflagset(7)) && (status=~"(180)|(183)|2[0-9][0-9]")) {

if (!search("^Content-Length:[ ]*0")) { use_media_proxy(); }; };

if (client_nat_test("1")) { fix_nated_contact(); }; }