[Serusers] Ser 0.9.0 + Mediaproxy 1.3.1 - Problems with NATed Clients Authentication

Felipe Martins fmartins at mundivox.com
Tue May 24 17:12:36 CEST 2005


Hi everybody,

	I've configured SER to work with mediaproxy, I also configured mediaproxy.ini. My clients are authenticating normally, but only the clients that has a Public IP (ex. 200.201.145.146), all the cliets that are behind NAT can't REGISTER. What may be wrong ?
	Do anyone uses SER 0.9.0 with mysql authentication and Mediaproxy that could give me a hand ?
	My ser.cfg and mediaproxy.ini are as follows
	

================== ser.cfg ======================
debug=3
fork=yes
log_stderror=no

listen=192.0.2.13           # put your server IP address here
port=5060
children=4

dns=no
rev_dns=no

fifo="/tmp/ser_fifo"
fifo_db_url="mysql://ser:heslo@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/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/domain.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"

modparam("auth_db|uri_db|usrloc", "db_url", "mysql://ser:heslo@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/local/etc/ser/sip-clients")
modparam("mediaproxy","rtp_asymmetrics","/usr/local/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")) {
                # INSERT YOUR IP ADDRESS HERE
                record_route_preset("192.0.2.13:5060;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(1);
                break;
        };

        if (uri==myself) {

                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(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("","subscriber")) {
                www_challenge("","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();
        };

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

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

	if (method=="CANCEL") {
		route(1);
		break;
	};

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

        consume_credentials();

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

        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();
        };
}

================== End of ser.cfg ======================


=================== mediaproxy.ini ======================
;
; Configuration file for MediaProxy
;

[Dispatcher]
;
; Section for configuring the proxy dispatcher
;
; The following options are available here:
;
; start         Boolean value that specifies if to start the dispatcher.
;               Default value: Yes
;
; socket        Path to the UNIX socket where the dispatcher receives
;               commands from SER. This should match the value for
;               mediaproxy_socket in ser.cfg
;               Default value: /var/run/proxydispatcher.sock
;
; group         Put the socket in this group and make it group writable.
;               Default value: ser
;
; defaultProxy  Default mediaproxy to use in case the From/To domains
;               involved in the call don't define any.
;               Valid values for this are:
;
;                - None
;                    don't use any default proxies. domains without
;                    mediaproxy SRV records won't work
;                - /path/to/unix/socket
;                    use a single MediaProxy server identified by the given
;                    UNIX socket path
;                - IP_or_hostname[:port]
;                    use a single MediaProxy server identified by its network
;                    address. The network address consists of an IP address
;                    or a hostname and an optional port number separated by
;                    a double colon. If port is missing 25060 will be assumed.
;                    Examples:
;                       10.0.0.1    (connect to 10.0.0.1 on port 25060)
;                       10.0.0.1:90 (connect to 10.0.0.1 on port 90)
;                       mp1.mydomain.com
;                       mp1.mydomain.com:7000
;                - domain://domain_name
;                    Use all MediaProxies defined by domain_name, honoring
;                    their priority and weight to create a cluster of proxies
;                    with fallback and load balancing capabilities.
;
;               Default value: /var/run/mediaproxy.sock
;
start = yes
socket = /var/run/proxydispatcher.sock
group = ser
defaultProxy = /var/run/mediaproxy.sock

[MediaProxy]
;
; Section for configuring the MediaProxy server
;
; The following options are available here:
;
; start         Boolean value that specifies if to start the RTP proxy server.
;               Default value: Yes
;
; socket        Path to the UNIX socket where MediaProxy receives
;               commands from the dispatcher or SER.
;               Default value: /var/run/mediaproxy.sock
;
; group         Put the socket in this group and make it group writable.
;               Default value: ser
;
; listen        Network address where MediaProxy receives commands from
;               a remote dispatcher.
;               Valid values for this are:
;
;                - None
;                    don't listen for network connections at all
;                - address[:port]
;                    listen on the specified address and port
;                    address can be an IP a hostname or the keyword Any
;                    (in which case it will listen on 0.0.0.0). If address is
;                    a hostname, that should map in DNS to an IP address
;                    present on the machine through an A record.
;                    If port is missing assume 25060.
;
;               Default value: None
;
; allow         List of addresses that are allowed to connect to this
;               MediaProxy server and send commands.
;               They are specified as a comma separated list of entries, with
;               each entry being specified in the CIDR network/mask notation
;               (ex. 10.0.0.0/8)
;
;               In addition simple IP addresses or hostnames are allowed, in
;               which case the mask is considered to be 32.
;
;               In addition to network ranges/addresses 2 keywords can be used
;               for this option:
;                  None   to specify that none is allowed to connect (not very
;                         useful but this is the default for security reasons)
;                  Any    to specify that anyone is allowed to connect
;                         (dangerous!)
;
;               Example: allow = 10.0.0.0/24, home-pc.mydomain.com, 1.2.3.4
;
;               Default value: None
;
; proxyIP       IP address to use to talk to the phones. If not specified, the
;               first found will be used. However first found usually means
;               first defined in /etc/hosts which may not be what you want.
;               If you find that the address that's automatically selected is
;               not the one you want, you can specify the right one using this
;               option. The address must be one that's present on one of the
;               host's interfaces.
;
; portRange     The range of ports to use for proxying the rtp streams.
;               This option is specified as minport:maxport with minport and
;               maxport being even numbers in the range 1024-65536
;               Default value: 35000:65000
;
; TOS           Unless you know what TOS means, leave this option alone.
;               The TOS value can be specified either as a decimal number or
;               as a hex number in the 0xnn format.
;               Default value: 0xb8
;
; idleTimeout   Expire idle sessions after this much time.
;               Default 60 seconds
;
; holdTimeout   Expire calls on hold after this much time.
;               Default value is 3600 seconds
;
; forceClose    Forcibly close a RTP session after this many seconds even if
;               it's still active. If forceClose is 0, then a session is never
;               closed no matter how long it lasts.
;               Default value: 0
;
start = yes
socket = /var/run/mediaproxy.sock
group = ser
listen = 200.142.103.114
allow = any
;proxyIP = 10.0.0.1
portRange = 35000:36000
;TOS = 0xb8
idleTimeout = 60
holdTimeout = 3600
forceClose = 0
accounting = off

[Accounting]
user = ser
password = heslo
host = any
database = ser
table = ser

#[Accounting]
#user = dbuser
#password = dbpass
#host = dbhost
#database = radius
#table = radacct

=================== End of mediaproxy.ini ======================




-- 
Felipe Martins
Mundivox Communications
Tecnologia e Projetos
fmartins at mundivox.com

Tel.: +55 +21 +3820 8839
Cel.: +55 +21 +9823 8602
Fax.: +55 +21 +3820 8844
www.mundivox.com





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