Hello everybody,
I have the following problem:
I use SER 0.9.3 which works fine with UAs with public IPs.
I want to make it work with NATed UAs. I use the following ser.cfg but still UAs register with their private IPs resulting in a one-way communication.
Can anyone PLEASE help me?
debug=3
fork=yes
log_stderror=no
listen=XX.XX.XX.XX # INSERT YOUR IP ADDRESS HERE
alias=XXXXXXX.com
alias=XX.XX.XX.XX
alias=XXXXXXX.com
alias=XXXXXXX.com
port=5060
children=6
dns=no
rev_dns=no
fifo="/tmp/ser_fifo"
fifo_mode=0666
fifo_db_url="mysql://ser:Bj3Kn7g8f19Hdv6@localhost/ser"
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/acc.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"
loadmodule "/usr/local/lib/ser/modules/auth.so"
loadmodule "/usr/local/lib/ser/modules/auth_db.so"
loadmodule "/usr/local/lib/ser/modules/uri.so"
loadmodule "/usr/local/lib/ser/modules/uri_db.so"
loadmodule "/usr/local/lib/ser/modules/mediaproxy.so"
loadmodule "/usr/local/lib/ser/modules/nathelper.so"
loadmodule "/usr/local/lib/ser/modules/textops.so"
loadmodule "/usr/local/lib/ser/modules/avpops.so"
loadmodule "/usr/local/lib/ser/modules/domain.so"
loadmodule "/usr/local/lib/ser/modules/permissions.so"
modparam("auth_db|permissions|uri_db|usrloc",
"db_url", "mysql://ser:Bj3Kn7g8f19Hdv6@localhost/ser")
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "password_column", "password")
# -------------- accounting params ----------------
modparam("acc", "log_missed_flag", 2)
modparam("acc", "log_level", 1)
modparam("acc", "log_flag", 2)
modparam("acc", "db_url", "mysql://ser:Bj3Kn7g8f19Hdv6@localhost/ser")
modparam("acc", "db_flag", 1)
modparam("acc", "failed_transactions", 1)
modparam("acc", "db_missed_flag", 2)
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/local/etc/ser/sip-clients")
modparam("mediaproxy","rtp_asymmetrics","/usr/local/etc/ser/rtp-clients")
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url", "mysql://ser:Bj3Kn7g8f19Hdv6@localhost/ser")
modparam("registrar", "nat_flag", 6)
modparam("rr", "enable_full_lr", 1)
modparam("tm", "fr_inv_timer", 27)
modparam("tm", "fr_inv_timer_avp", "inv_timeout")
modparam("permissions", "db_mode", 1)
modparam("permissions", "trusted_table", "trusted")
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")) {
# INSERT YOUR IP ADDRESS HERE
record_route_preset("XX.XX.XX.XX:5060;nat=yes");
} 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();
};
};
route(1);
break;
};
# -----------------------------------------------------------------
# Call Type Processing Section
# -----------------------------------------------------------------
if (uri!=myself) {
route(5);
route(1);
break;
};
if (uri==myself) {
if (method=="ACK") {
route(6);
break;
} else if (method=="CANCEL") {
route(3);
break;
} else if (method=="INVITE") {
route(3);
break;
} else if (method=="REGISTER") {
route(2);
break;
};
lookup("aliases");
if (uri!=myself) {
route(5);
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();
};
if (!www_authorize("XXXXXXX.com","subscriber")) {
www_challenge("XXXXXXX.com","0");
break;
};
if (!check_to()) {
sl_send_reply("401", "Unauthorized");
break;
};
consume_credentials();
if (!save("location")) {
sl_reply_error();
};
}
route[3] {
# -----------------------------------------------------------------
# CANCEL and INVITE Message Handler
# -----------------------------------------------------------------
if (client_nat_test("3")) {
setflag(7);
force_rport();
fix_nated_contact();
};
if (method=="INVITE" && !allow_trusted()) {
if (!proxy_authorize("XXXXXXX.com","subscriber")) {
proxy_challenge("XXXXXXX.com","0");
break;
} else if (!check_from()) {
sl_send_reply("403", "Use From=ID");
break;
};
consume_credentials();
};
lookup("aliases");
if (uri!=myself) {
route(5);
route(1);
break;
};
if (uri=~"^sip:00[0-9]*@") { # International PSTN
route(4);
break;
};
/*if (!lookup("location")) {
if (uri=~"^sip:00302810[0-9]{10}@") { # Domestic PSTN
route(4);
break;
};
sl_send_reply("404", "User Not Found");
break;
};*/
if (method=="CANCEL") {
route(1);
break;
};
route(5);
route(1);
}
route[4] {
# -----------------------------------------------------------------
# PSTN Handler
# -----------------------------------------------------------------
rewritehost("XX.XX.XX.XX:5060"); # INSERT YOUR PSTN GATEWAY IP ADDRESS
avp_write("i:45", "inv_timeout");
route(5);
route(1);
}
route[5] {
# -----------------------------------------------------------------
# RTP Proxy Enabler
# -----------------------------------------------------------------
if (isflagset(6) || isflagset(7)) {
use_media_proxy();
};
}
route[6] {
# ------------------------------------------------------------------------
# ACK Handler
# ------------------------------------------------------------------------
# ------------------------------------------------------------------------
# Aliases Section
# ------------------------------------------------------------------------
lookup("aliases");
if (uri!=myself) {
route(5);
route(1);
break;
};
lookup("location");
route(1);
}
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();
};
}