[Serusers] Routing loop

[CM Rahman]

Please email the cisco configuration and don't forget to take the
password info out of your cisco.

Thanks

&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*&*
C.M. Rahman Jr.
CTO
CCNP, MCSE Security    "Secure your self by securing your System"
CompTI Security Plus Certified
CCS Internet
http://www.ccsi.com
13704 Research Blvd. Building O-Suite 4
Austin, TX 78750
Tel: 512-257-2274 Ex: 115


-----Original Message-----
From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] On
Behalf Of Klaus Darilion
Sent: Monday, June 21, 2004 6:46 AM
To: AJ Grinnell
Cc: serusers at lists.iptel.org
Subject: Re: [Serusers] Routing loop

If the calls are routed back by the PRI provider then the problem is in 
the PRI side: A misconfiguration of your GW or the switch of your
provider.

klaus

AJ Grinnell wrote:
> Can someone please help before I lose my mind here. I have all calls
> pointing to a cisco as5350. When the calls come in from the cisco,
they are
> routed through ser and back out the cisco, which in turn gets routed
back to
> the cisco by our PRI provider. This keeps going in a loop untill all
> channels are busied out. I have tried every way I can think of to
block
> calls incoming from the IP of the cisco, but nothing works. What am I
doing
> wrong here?
> 
> 
>  simple quick-start config script
> #
> 
> # ----------- global configuration parameters ------------------------
> 
> debug=3         # debug level (cmd line: -dddddddddd)
> fork=yes
> log_stderror=yes        # (cmd line: -E)
> 
> listen=x
> listen=127.0.0.1
> alias=x
> alias=x
> alias=x
> 
> 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"
> sip_warning=yes
> syn_branch=no
> server_signature=yes
> reply_to_via=no
> 
> # ------------------ module loading ----------------------------------
> 
> # Uncomment this if you want to use SQL database
> loadmodule "/usr/lib/ser/modules/mysql.so"
> loadmodule "/etc/lib/ser/modules/sl.so"
> loadmodule "/etc/lib/ser/modules/tm.so"
> loadmodule "/etc/lib/ser/modules/rr.so"
> loadmodule "/etc/lib/ser/modules/maxfwd.so"
> loadmodule "/etc/lib/ser/modules/usrloc.so"
> loadmodule "/etc/lib/ser/modules/registrar.so"
> loadmodule "/etc/lib/ser/modules/auth.so"
> loadmodule "/etc/lib/ser/modules/auth_db.so"
> 
> # ----------------- setting module-specific parameters ---------------
> 
> # -- usrloc params --
> 
> #modparam("usrloc", "db_mode",   0)
> modparam("usrloc", "db_mode", 2)
> modparam("auth_db", "db_url", "sql://ser:heslo@localhost/ser")
> 
> # -- auth params --
> modparam("auth_db", "db_url", "sql://ser:heslo@localhost/ser")
> modparam("auth_db", "calculate_ha1", yes)
> 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)
> 
> # -------------------------  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", "Message too big");
>                 break;
>         };
> 
>         record_route();
>         # loose-route processing
>         if (loose_route()) {
>                 t_relay();
>                 break;
>         };
> 
>         # 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==myself) {
> 
>                 if (method=="REGISTER") {
> 
>         # Uncomment this if you want to use digest authentication
>                        if (!www_authorize("x.x.x.x", "subscriber")) {
>                                www_challenge("x.x.x.x", "0");
>                                break;
>                        };
> 
>                         save("location");
>                         break;
>                 };
> 
>                 if (method=="INVITE") {
>                    if (!(uri=="sip:.*@10\.200\.20\.10")){     #Have
also
> tried if (!uri=~"sip:.*@10\.200\.20\.10")
>                          if (uri=~"^sip:[2-9]...... at .*") {    # and if
> (!ip_addr==10\.200\.20\.10")
>                         # attempt handoff to PSTN.
>                         log( "Forwarding to PSTN\n" );
>                        sethost("10.200.20.10");
>                         };
>                  };
>             };
>         };
>         # 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();
>         };
> }
> 
> 
> AJ Grinnell
> Network Operations Technician
> CRT/ Arialink Broadband
> 1223 Turner Street, Suite A
> Lansing, MI 48906
> 517.346.5041
> 517.492.1321 direct
> 
> _______________________________________________
> Serusers mailing list
> serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers
> 
> 

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