sr-users February 2005

sr-users@lists.kamailio.org

215 participants
467 discussions

[Serusers] ser and client behind nat,no audio...urgent

by Ashling O'Driscoll

I really need to sort out my nat situation with ser as soon as possible....Im beginning to believe its not doable. SER is behind nat and clients are behind nat (one on the same lan as ser) and the other on a totally different nat. Both clients register with a public address and port forwarding the nat router forwards the sip traffic to ser. I know this situation is horrible but I cant do anything about it. I have setup nathelper and rtpproxy on ser. Now if a client behind nat (which is on the same lan as ser) rings another client behind nat (on same lan as ser), then everything works fine and the audio flows. However if a lcient behind (on the same lan as ser) rings a client on behind on nat on DIFFERENT network to ser, then no audio flows. I realise this is because of that fact that they both have internal IP addresses and a middle man is needed. That is why I set up rtpproxy. But will rtpproxy work when its also behind nat??.... I've did an ethereal sniff of remote client and also of ser when calling from my client on ser lan to the remote client and the results are below. My config was a jumble of various emails from the mailing list so Im going to start from scratch and say my ser.cfg is just like the basic one included in the below link. http://www.informatik.uni-bremen.de/~prelle/terena/cookbook/Cookbook_D 2/ch04s07.html#d0e5091 Please, Please give me guidance. I know this is a horrible nat situation but i just cant figure out how to solve it or if it can be solved. Thanks, Aisling ethereal sniff of remote client (not on same lan as ser, but behind nat)xxx.xxx.xxx.xxx is my public address SIP INVITE xxx.xxx.xxx.xxx. -> 10.0.1.21 (internal address of remote client) 100 trying 10.0.1.21 -> xxx.xxx.xxx.xxx 180 ringing 10.0.1.21 -> xxx.xxx.xxx.xxx 200 ok 10.0.1.21 -> xxx.xxx.xxx.xxx rtp 10.0..1.21 -> xxx.xxx.xxx.xxx ethereal sniff of ser (with nathelper and rtpproxy) but behind nat INVITE 172.16.3.28 (internal address of client on same lan as ser) -> xxx.xxx.xxx.xxx invite xxx.xxx.xxx.xxx.172.16.3.15(internal address of ser) 100 trying 172.16.3.15 -> xxx.xxx.xxx.xxx invite 172.16.3.15 -> 157.190.70.231(public address of remote client) 100 xxx.xxx.xxx.xxx -> 172.16.3.28 100 trying 157.190.70.231 -> 172.16.3.15 icmp 172.16.3.15 -> 157.190.70.231 dest unreachable same happens for 180 ringing and 200 ok. -------------------Legal Disclaimer--------------------------------------- The above electronic mail transmission is confidential and intended only for the person to whom it is addressed. Its contents may be protected by legal and/or professional privilege. Should it be received by you in error please contact the sender at the above quoted email address. Any unauthorised form of reproduction of this message is strictly prohibited. The Institute does not guarantee the security of any information electronically transmitted and is not liable if the information contained in this communication is not a proper and complete record of the message as transmitted by the sender nor for any delay in its receipt.

19 years, 10 months

[Serusers] bug in auth db

by info＠beeplove.com

My mysql database server is different computer than my ser server. ser was not able to connect to database. I put some debug code in authdb_mod.c static int child_init(int rank) { db_handle = db_init(db_url); LOG(L_ERR, "authdb_mod.c#child_init(): db_url: %s\n", db_url); if (!db_handle) { LOG(L_ERR, "auth_db:init_child(): Unable to connect database\n"); return -1; } return 0; } I have found db_url is not getting the value from my ser.cft. Its getting the default value from config.h that was defined before compiled. I compiled my ser after editing config.h with mysql param that match my situation and my ser is up !! Thanks, -- Mohammad Khan

19 years, 10 months

Re: [Serusers] SER Reliability

by Marian Dumitru

Hi Ricardo, Use the "-P" SER command line option to make SER to generate a PID file : ser -P /var/run/ser.pid Best regards, Marian Ricardo Martinez wrote: > Thanks Marian again for your help!. > I was reading the documentation for the program and it seems to do what i'm > looking for. > I have two question : > -Have you ever used this program with SER?. > -If the answer is yes : Where can i find the PID file for SER?.. i > can not find it in /var/run/. It seems that > that all the "check procces" statemenst need the PID file. > > Thanks again. > > Ricardo Martinez.- > > >>-----Mensaje original----- >>De: Marian Dumitru [mailto:marian.dumitru@voice-sistem.ro] >>Enviado el: Jueves, 03 de Febrero de 2005 16:50 >>Para: Ricardo Martinez >>CC: 'serusers(a)lists.iptel.org' >>Asunto: Re: [Serusers] SER Reliability >> >> >>Hi Ricardo, >> >>You can use "monit" to keep trace of you SER and to restart >>it if it's >>down. Monit main application is to keep trace of the web servers, but >>you can configure it for ser also. >>You can read more about monit at "http://www.tildeslash.com/monit/". >> >>Best regards, >>Marian >> >> >>Ricardo Martinez wrote: >> >>>Hello list. >>> I have a question about reliability in SER. Suppose that for >>>certain reason, the process "ser" fails, and therefore the >> >>SIP Server is >> >>>down. Is there a way to keep trace of the "ser" process >> >>status?? and if the >> >>>process is not running start a script to restart the >> >>process. I know that >> >>>maybe the "crond" command could be useful for this purpose. >> >> Does someone >> >>>have any clue about this? Or maybe SER has his own "crond" module or >>>something.? >>> I really need and advice about this issue. >>>Thanks in advance >>> >>>Regards, >>>Ricardo Martinez Ogalde.- >>> >>>_______________________________________________ >>>Serusers mailing list >>>serusers(a)lists.iptel.org >>>http://lists.iptel.org/mailman/listinfo/serusers >>> >> >>-- >>Voice System >>http://www.voice-system.ro >> -- Voice System http://www.voice-system.ro

19 years, 10 months

=?iso-8859-1?Q?Re:_[Serusers]_Problems_with_Makefile????=

by info＠beeplove.com

Eric, Please follow my other tread, Evan is helping me on that. I guess, you and I having same issue. Take a look at /var/log/message.. you might get a clue ! Mohammad Eric Haskins <eric(a)rackspeed.net> wrote on 02/03/2005, 10:32:37 PM: > -- Mohammad Khan

19 years, 10 months

[Serusers] Problems with Makefile???

by Eric Haskins

Hello all, I am having an issue with SER installation. When I build it, make clean - make modules - make install it seems to create /etc and other directories in /usr/local/ and it launches no problem but here is the issue Then when I shutdown SER to change .cfg /usr/local/sbin/ser stop yields Stopping SER : No PID file found!. I can see all the processes stopped. SER start yields Listening on 127.0.0.1 [127.0.0.1]:5060 216.xxx.xxx.xxx [216.xxx.xxx.xxx ]:5060 Aliases: sip:5060 sip.domain.net:5060 e4e:5060 localhost:5060 But no processes are running. ser -c = config file ok Eric

19 years, 10 months

Re: [Serusers] ser dead but subsys locked

by info＠beeplove.com

My mysql connection param: host: 192.168.71.8 user: serro passwd: 47serro11 database: ser and I have put this line after loading the modules: modparam("auth_db", "db_url", "sql://serro:47serro11@192.168.71.8/ser") and still getting: Feb 3 15:38:50 croaker ser[27079]: connect_db(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) Feb 3 15:38:50 croaker ser[27079]: db_init(): Error while trying to connect database Feb 3 15:38:50 croaker ser[27079]: mod_init(): Error while connecting database Feb 3 15:38:50 croaker ser[27079]: init_mod(): Error while initializing module usrloc What I am doing wrong? Mohammad

19 years, 10 months

RE: [Serusers] Trusted IP and security. FOLLOWUP QUESTION

by Tom Lowe

When you set up a trusted IP in SER, does it use the source IP address of the INVITE UDP packet itself, or does it use the IP address contained in the FROM: field within the SIP INVITE message? Does anyone know how Cisco and other devices do it as well? Thanks! Tom

19 years, 10 months

[Serusers] doubts about nathelper

by Lucas Aimaretto

I'm having trouble in using STUN with some UserAgents, which are not nat friendly at all. So, I've been reading about nathelper, but I did not find how does it work or how do I need to configure my ser.cfg to have this solution implemented. I'd like to know what it the function theory of nathelper (not about its code, but yes how does it work) and how should I need to touch my ser.cfg and also how to configure my UserAgent. Will nathelper help me with ANY UserAgent behind a NAT, no matter what kind of nat am I using and no matter whether my nat preserves or not the udp ports for the rtp connection ?? Does NAThelper impacts in the quality of the communication (QoS) ? Is NATHelper an outboundproxy ? Is NATHelper a session-border-controller ? The thing is I'm telling my UserAgent to use some XXX rtp port, but, automagically (ufff) my linksys changes the port, and so I get one-way audio. I need to solve this urgently. It gets worse if I have many UserAgents behind this nat. I've also noticed that when broadband router (d-link) does not preserve ports, and assigns them randomly, whenever the link to internet goes down and up again, my UserAgent needs to talk again with STUN to find out its port. Just a mess !!! Hope you can help me out in getting to know nathelper and configuring it. Thanx in advance Regards, Lucas -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.4 - Release Date: 01/02/2005

19 years, 10 months

[Serusers] SER and PSAP/E911

by Evan Borgstrom

Hey All, Just wondering if anyone has had any involvement with deploying a SER installation that properly supported E911 and PSAP. I've been reading through a number of the documents on www.e911institute.org regarding their VOIP information and deployment and was curious if anyone on the list had real world experience with it, ie. rewriting dset based on DID of the user dialing 911, or even better using a IP to Location database lookup to retrieve a 911 center geographically close the user. -Evan P.S. for those curious this is a good document from the e911 site: http://www.e911institute.org/Roundtable%20and%20Tours/June%2024,%202004/VoI…

19 years, 10 months

Re: Re: Re: [Serusers] ser dead but subsys locked

by info＠beeplove.com

aha.. I have found the problem ! Feb 3 13:56:02 croaker ser: WARNING: could not rev. resolve 192.168.71.3 -->> this shouldn'e be a big issue, as long as I am playing inside my local network, right? Feb 3 13:56:02 croaker ser[27023]: connect_db(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) -->> 'ser' database is in diffent server Feb 3 13:56:02 croaker ser[27023]: db_init(): Error while trying to connect database -->> please tell me, how I will tell ser about my mysql server, including username and password. Please .. help .. Evan, thanks a lot for forwarding me in proper direction. MOhammad Evan Borgstrom <evan.borgstrom(a)ca.mci.com> wrote on 02/03/2005, 07:38:22 PM: > If you start ser (via command line) and do a 'ps' is it running? What > does /var/log/messages say? Look in the current directory as well as / > is there a core file? > > -Evan >

19 years, 10 months

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sr-users February 2005