RE: [Serusers] PSTN

From: "Kapil Dhawan" <sersavvy(a)hotmail.com> To: sersavvy(a)hotmail.com CC: serusers(a)lists.iptel.org Subject: RE: [Serusers] PSTN Date: Tue, 01 Jun 2004 05:02:54 +0000 Hi my second part is done...i have used t_relay_to_udp rather than

but first is till not done. >From: "Kapil Dhawan" <sersavvy(a)hotmail.com> >To: serusers(a)lists.iptel.org >Subject: [Serusers] PSTN >Date: Tue, 01 Jun 2004 00:59:07 +0000 > >Hi List > >I am running rtpproxy and nathelper which is fine for me...but when i

> >and second is i am storing logs in acc table...there is i make a

> >below is my ser.cfg > > ># ># $Id: nathelper.cfg,v 1.1.2.1 2003/11/24 14:47:18 janakj Exp $ ># ># simple quick-start config script including nathelper support > ># This default script includes nathelper support. To make it work ># you will also have to install Maxim's RTP proxy. The proxy is

># if one of the parties is behind a NAT. ># ># If you have an endpoing in the public internet which is known to ># support symmetric RTP (Cisco PSTN gateway or voicemail, for example), ># then you don't have to force RTP proxy. If you don't want to enforce ># RTP proxy for some destinations than simply use t_relay() instead of ># route(1) ># ># Sections marked with !! Nathelper contain modifications for nathelper ># ># NOTE !! This config is EXPERIMENTAL ! ># ># ----------- global configuration parameters ------------------------ > >debug=8 # debug level (cmd line: -dddddddddd) >fork=yes >log_stderror=yes # (cmd line: -E) > >/* Uncomment these lines to enter debugging mode >fork=no >log_stderror=yes >*/ > >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" > ># ------------------ module loading ---------------------------------- > ># Uncomment this if you want to use SQL database >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/textops.so" > ># Uncomment this if you want digest authentication ># mysql.so must be loaded ! >loadmodule "/usr/local/lib/ser/modules/auth.so" >loadmodule "/usr/local/lib/ser/modules/auth_db.so" > ># !! Nathelper >loadmodule "/usr/local/lib/ser/modules/nathelper.so" > ># !! Accounting >loadmodule "/usr/local/lib/ser/modules/acc.so" > ># !! Voicemail And Conference >loadmodule "/usr/local/lib/ser/modules/vm.so" > ># ----------------- setting module-specific parameters --------------- > ># -- usrloc params -- > >#modparam("usrloc", "db_mode", 0) > ># Uncomment this if you want to use SQL database ># for persistent storage and comment the previous line >modparam("usrloc", "db_mode", 2) > ># -- auth params -- ># Uncomment if you are using auth module ># >modparam("auth_db", "calculate_ha1", yes) ># ># If you set "calculate_ha1" parameter to yes (which true in this

># uncomment also the following parameter) ># >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) > ># !! Nathelper ># -- nathelper params -- >modparam("registrar", "nat_flag", 6) >modparam("nathelper", "natping_interval", 30) # Ping interval 30 s >modparam("nathelper", "ping_nated_only", 1) # Ping only clients

> ># !! Accounting ># -- acc params -- ># set the reporting log level >modparam("acc", "log_level", 2) # Set log_level to 2 ># number of flag, which will be used for accounting; if a message is ># labeled with this flag, its completion status will be reported >modparam("acc", "log_flag", 1 ) >modparam("acc", "log_missed_flag", 2) >modparam("acc", "failed_transactions", 1) >modparam("acc", "report_cancels", 1) >modparam("acc", "db_url", "mysql://ser:heslo@localhost/ser") >modparam("acc", "db_flag", 1) >modparam("acc", "db_missed_flag", 2) > ># !! Transaction ># -- tm params -- >modparam("tm", "fr_inv_timer", 200) > ># ------------------------- 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; > }; > > # !! Nathelper > # Special handling for NATed clients; first, NAT test is > # executed: it looks for via!=received and RFC1918 addresses > # in Contact (may fail if line-folding is used); also, > # the received test should, if completed, should check all > # vias for rpesence of received > if (nat_uac_test("3")) { > # Allow RR-ed requests, as these may indicate that > # a NAT-enabled proxy takes care of it; unless it is > # a REGISTER > > if (method == "REGISTER" || ! search("^Record-Route:")) { > log("LOG: Someone trying to register from private IP,

> > # This will work only for user agents that support symmetric > # communication. We tested quite many of them and majority is > # smart enough to be symmetric. In some phones it takes a

> # option. With Cisco 7960, it is called NAT_Enable=Yes, with

> # called "symmetric media" and "symmetric signalling". > > fix_nated_contact(); # Rewrite contact with source IP of

> if (method == "INVITE") { > fix_nated_sdp("1"); # Add direction=active to SDP > }; > force_rport(); # Add rport parameter to topmost Via > setflag(6); # Mark as NATed > }; > }; > > # labeled all transaction for accounting > setflag(1); > setflag(2); > > # we record-route all messages -- to make sure that > # subsequent messages will go through our proxy; that's > # particularly good if upstream and downstream entities > # use different transport protocol > if (!method=="REGISTER") record_route(); > > # subsequent messages withing a dialog should take the > # path determined by record-routing > if (loose_route()) { > # mark routing logic in request > append_hf("P-hint: rr-enforced\r\n"); > route(1); > break; > }; > > if (!uri==myself) { > # mark routing logic in request > append_hf("P-hint: outbound\r\n"); > route(1); > 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("220.226.42.185","subscriber")) { > www_challenge("220.226.42.185", "0"); > break; > }; > > save("location"); > break; > }; > > lookup("aliases"); > if (!uri==myself) { > append_hf("P-hint: outbound alias\r\n"); > route(1); > break; > }; > > # native SIP destinations are handled using our USRLOC DB > if (!lookup("location")) { > sl_send_reply("404", "Not Found"); > break; > }; > }; > append_hf("P-hint: usrloc applied\r\n"); > route(1); >} > >route[1] >{ > # !! Nathelper > if (uri=~"[@:](192\.168\.|10\.|172\.(1[6-9]|2[0-9]|3[0-1])\.)" &&

> sl_send_reply("479", "We don't forward to private IP addresses"); > break; > }; > > # if client or server know to be behind a NAT, enable relay > if (isflagset(6)) { > force_rtp_proxy(); > }; > > # NAT processing of replies; apply to all transactions (for example, > # re-INVITEs from public to private UA are hard to identify as > # NATed at the moment of request processing); look at replies > t_on_reply("1"); > > if(uri=~"^sip:00*") > { > rewritehost(); > forward() > break; > }; > > # send it out now; use stateful forwarding as it works reliably > # even for UDP2TCP > if (!t_relay()) { > sl_reply_error(); > }; >} > ># !! Nathelper >onreply_route[1] { > # NATed transaction ? > if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") { > fix_nated_contact(); > force_rtp_proxy(); > # otherwise, is it a transaction behind a NAT and we did not > # know at time of request processing ? (RFC1918 contacts) > } else if (nat_uac_test("1")) { > fix_nated_contact(); > }; >} > >_________________________________________________________________ >Post Classifieds on MSN classifieds.