[OpenSIPS-Users] Sip user behind a NAT
Ignacio Gonzalez
mylaneza at gmail.com
Tue Aug 7 20:53:50 CEST 2012
Hi Ali, I use this configuration script to start my opensips proxy and it
start, I only want to know, Do you see something wrong?
I put in bold the modifications a made to add the nat_traversal module and
the advertised_address parameter.
In the documentation it says that nat_traversal is straight forward when
using a single proxy, ( that is my case ).
"In this case the usage is straight forward. The nat_keepalive() function
needs to be called before save_location() for REGISTER requests, before
handle_subscribe() for SUBSCRIBE requests and before t_relay() for the
first INVITE of a dialog. "
I do not configure any subscription, and I did not find the save_location
function, I assumed that save("location") is a newer version of this
function.
#CONFIG FILE
debug=3
log_stderror=no
log_facility=LOG_LOCAL1
fork=yes
children=4
#debug=6
#fork=no
#log_stderror=yes
#disable_dns_blacklist=no
#dns_try_ipv6=yes
auto_aliases=no
*advertised_address="mydomain.com"*
listen=udp:192.168.1.220:5060 # CUSTOMIZE ME
disable_tcp=no
listen=tcp:192.168.1.220:5060 # CUSTOMIZE ME
disable_tls=yes
mpath="/home/syrium/opensips_proxy/lib/opensips/modules/"
loadmodule "signaling.so"
loadmodule "sl.so"
loadmodule "tm.so"
modparam("tm", "fr_timer", 5)
modparam("tm", "fr_inv_timer", 30)
modparam("tm", "restart_fr_on_each_reply", 0)
modparam("tm", "onreply_avp_mode", 1)
loadmodule "rr.so"
modparam("rr", "append_fromtag", 0)
loadmodule "maxfwd.so"
loadmodule "sipmsgops.so"
loadmodule "mi_fifo.so"
modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")
modparam("mi_fifo", "fifo_mode", 0666)
loadmodule "uri.so"
modparam("uri", "use_uri_table", 0)
modparam("uri", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
loadmodule "db_mysql.so"
loadmodule "usrloc.so"
modparam("usrloc", "nat_bflag", 10)
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
loadmodule "registrar.so"
modparam("registrar", "tcp_persistent_flag", 7)
modparam("registrar", "received_avp", "$avp(received_nh)")
#modparam("registrar", "max_contacts", 10)
loadmodule "acc.so"
modparam("acc", "early_media", 0)
modparam("acc", "report_cancels", 0)
modparam("acc", "detect_direction", 0)
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)
modparam("acc", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
loadmodule "auth.so"
loadmodule "auth_db.so"
modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("auth_db", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
modparam("auth_db", "load_credentials", "")
loadmodule "domain.so"
modparam("domain", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
modparam("domain", "db_mode", 1) # Use caching
modparam("auth_db|usrloc|uri", "use_domain", 1)
loadmodule "dialog.so"
modparam("dialog", "dlg_match_mode", 1)
modparam("dialog", "default_timeout", 21600) # 6 hours timeout
modparam("dialog", "db_mode", 2)
modparam("dialog", "db_url", "mysql://opensips:opensipsrw@localhost/opensips")
# CUSTOMIZE ME
*loadmodule "nat_traversal.so"*
loadmodule "nathelper.so"
modparam("nathelper", "natping_interval", 10)
modparam("nathelper", "ping_nated_only", 1)
modparam("nathelper", "received_avp", "$avp(received_nh)")
loadmodule "rtpproxy.so"
modparam("rtpproxy", "rtpproxy_sock", "udp:localhost:12221") # CUSTOMIZE ME
####### Routing Logic ########
route{
force_rport();
if (nat_uac_test("23")) {
if (is_method("REGISTER")) {
fix_nated_register();
setbflag(10);
} else {
fix_nated_contact();
setflag(10);
}
}
if (!mf_process_maxfwd_header("10")) {
sl_send_reply("483","Too Many Hops");
exit;
}
if (has_totag()) {
# sequential request withing a dialog should
# take the path determined by record-routing
if (loose_route()) {
# validate the sequential request against dialog
if ( $DLG_status!=NULL && !validate_dialog() ) {
xlog("In-Dialog $rm from $si (callid=$ci) is not valid
according to dialog\n");
## exit;
}
if (is_method("BYE")) {
setflag(1); # do accounting ...
setflag(3); # ... even if the transaction fails
} else if (is_method("INVITE")) {
# even if in most of the cases is useless, do RR for
# re-INVITEs alos, as some buggy clients do change route set
# during the dialog.
record_route();
}
if (check_route_param("nat=yes"))
setflag(10);
# route it out to whatever destination was set by loose_route()
# in $du (destination URI).
route(1);
} else {
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
# non loose-route, but stateful ACK; must be an ACK
after
# a 487 or e.g. 404 from upstream server
t_relay();
exit;
} else {
# ACK without matching transaction ->
# ignore and discard
exit;
}
}
sl_send_reply("404","Not here");
}
exit;
}
# CANCEL processing
if (is_method("CANCEL"))
{
if (t_check_trans())
t_relay();
exit;
}
t_check_trans();
if ( !(is_method("REGISTER") ) ) {
if (is_from_local())
{
# authenticate if from local subscriber
# authenticate all initial non-REGISTER request that pretend to
be
# generated by local subscriber (domain from FROM URI is local)
if (!proxy_authorize("", "subscriber")) {
proxy_challenge("", "0");
exit;
}
if (!db_check_from()) {
sl_send_reply("403","Forbidden auth ID");
exit;
}
consume_credentials();
# caller authenticated
} else {
# if caller is not local, then called number must be local
if (!is_uri_host_local()) {
send_reply("403","Rely forbidden");
exit;
}
}
}
# preloaded route checking
if (loose_route()) {
xlog("L_ERR", "Attempt to route with preloaded Route's
[$fu/$tu/$ru/$ci]");
if (!is_method("ACK"))
sl_send_reply("403","Preload Route denied");
exit;
}
# record routing
if (!is_method("REGISTER|MESSAGE"))
record_route();
# account only INVITEs
if (is_method("INVITE")) {
# create dialog with timeout
if ( !create_dialog("B") ) {
send_reply("500","Internal Server Error");
exit;
}
setflag(1); # do accounting
}
if (!is_uri_host_local()) {
append_hf("P-hint: outbound\r\n");
route(1);
}
# requests for my domain
if (is_method("PUBLISH|SUBSCRIBE"))
{
sl_send_reply("503", "Service Unavailable");
exit;
}
if (is_method("REGISTER"))
{
# authenticate the REGISTER requests
if (!www_authorize("", "subscriber"))
{
www_challenge("", "0");
exit;
}
if (!db_check_to())
{
sl_send_reply("403","Forbidden auth ID");
exit;
}
if ( proto==TCP || 0 )
setflag(7);
*if ( client_nat_test("3") ) {
nat_keepalive();
}*
if (!save("location"))
sl_reply_error();
exit;
}
if ($rU==NULL) {
# request with no Username in RURI
sl_send_reply("484","Address Incomplete");
exit;
}
# do lookup with method filtering
if (!lookup("location","m")) {
if (!db_does_uri_exist()) {
send_reply("420","Bad Extension");
exit;
}
t_newtran();
t_reply("404", "Not Found");
exit;
}
if ( isbflagset(10) )
setflag(10);
# when routing via usrloc, log the missed calls also
setflag(2);
route(1);
}
route[1] {
# for INVITEs enable some additional helper routes
if (is_method("INVITE")) {
if (isflagset(10)) {
rtpproxy_offer("ro");
}
t_on_branch("2");
t_on_reply("2");
t_on_failure("1");
*if ( client_nat_test("3") ) {
nat_keepalive();
}*
}
if (isflagset(10)) {
add_rr_param(";nat=yes");
}
if (!t_relay()) {
send_reply("500","Internal Error");
};
exit;
}
branch_route[2] {
xlog("new branch at $ru\n");
}
onreply_route[2] {
if ( nat_uac_test("1") )
fix_nated_contact();
if ( isflagset(10) )
rtpproxy_answer("ro");
xlog("incoming reply\n");
}
failure_route[1] {
if ( t_was_cancelled() ) {
exit;
}
}
local_route {
if (is_method("BYE") && $DLG_dir=="UPSTREAM") {
acc_db_request("200 Dialog Timeout", "acc");
}
}
Thanks for your time Ali.
2012/8/7 Ignacio Gonzalez <mylaneza at gmail.com>
> Ok aly, I will read more, i have created the configuration script already
> with opensips-cp, I created a residential script and I selected the NAT
> option but that option just install nathelper module, and this why I asked
> you if nathelper and nat traversal module were mutually exclusive. I will
> add nat traversal to my configuration script.
>
> Another question, where can I read about the differences between
> residential and trunking scripts?
>
>
> 2012/8/7 Ali Pey <alipey at gmail.com>
>
>> Ignacio,
>>
>> You need to implement nat traversal in your routing script -
>> opensips.cfg. IMO, forget about the opensips-cp until you get it to work.
>> Once you know how it works, then you know how you can do with the config
>> tool. Sounds like you need lots more reading/testing :)
>>
>> Regards,
>> Ali Pey
>>
>>
>> On Mon, Aug 6, 2012 at 1:38 PM, Ignacio Gonzalez <mylaneza at gmail.com>wrote:
>>
>>> Ok, i red the NAT_TRAVERSAL module, i don't know how to configure using
>>> the configuration tool, do I have to configure it manual? The NAT_TRAVERSAL
>>> module and the NATHELPER module are mutually exclusive?
>>>
>>>
>>> 2012/8/5 Ali Pey <alipey at gmail.com>
>>>
>>>> Hello Ignacio,
>>>>
>>>> Yes, you can handle nat and you don't need stun, turn or ICE. In fact,
>>>> it's always better to turn off any nat traversal feature on the phone when
>>>> you are using a proxy server such as OpenSIPS.
>>>>
>>>> Check out the nat traveral module and advertized_ip. How you implement
>>>> it depends on your network setup:
>>>> http://www.opensips.org/html/docs/modules/1.8.x/nat_traversal.html
>>>>
>>>> Regards,
>>>> Ali Pey
>>>>
>>>> On Sat, Aug 4, 2012 at 5:31 PM, Ignacio Gonzalez <mylaneza at gmail.com>wrote:
>>>>
>>>>> Hello everybody, I have configured my opensips proxy with
>>>>> NAT_TRAVERSAL support using the new tool for configuration. I developed a
>>>>> softphone using JAIN-SIP, I think JAIN-SIP does not implements STUN, TURN
>>>>> and ICE for NAT Traversal ( RFC 6314), is any way to do nat traversal
>>>>> without making a new softphone with another library?
>>>>>
>>>>> I also have tested this softphone with Inphonex, and this company use
>>>>> openSER in its proxy and the softphone works fine, but i don't know how
>>>>> they do that, so I thought to ask if is something I can do in the
>>>>> configuration file of my proxy or they use something else to solve this
>>>>> problem.
>>>>>
>>>>> Thanks for all.
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at lists.opensips.org
>>>>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at lists.opensips.org
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>>>>
>>>>
>>>
>>> _______________________________________________
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>>>
>>
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>
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