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</o:shapelayout></xml><![endif]--></head><body lang=EN-ZA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks for the advice Flavio.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Currently I am actually pretty close with my NAT’ed OpenSIPS and NAT’ed clients. I am assuming this is because I have a simple NAT scenario with full-cone NATs.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I get as far as making a call, but when I pick-up the call only one side gets RTP through. I traced the problem to the fact that a local address is being put in the “Record Route” section of an ACK response.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I would like to try to get this more controllable scenario working first before I launch into new complexity with RTP proxies etc. I think that I just need to know how to get the fix_nat_sip() and fix_nat_contact() to work. Any pointers with that?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mark<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> users-bounces@lists.opensips.org [mailto:users-bounces@lists.opensips.org] <b>On Behalf Of </b>Flavio Goncalves<br><b>Sent:</b> 03 January 2013 12:27<br><b>To:</b> OpenSIPS users mailling list<br><b>Subject:</b> Re: [OpenSIPS-Users] NAT issues on client and server<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Mark, <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>There is no simple way to traverse NAT. Unless all your routers use a non symmetric NAT, you will have to use rtpproxy or mediaproxy (you can check this with a stun client). OpenSIPS behind NAT make things even more complicated. So I suggest that you follow an example with rtpproxy or media proxy and also use the OpenSIPS in a valid IP address. The setup you are trying to do with OpenSIPS behind NAT is possible, but it is even more complex. <o:p></o:p></p></div><div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><p class=MsoNormal>Flavio E. Goncalves<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>2013/1/3 Mark Currie <<a href="mailto:mark@ziliant.com" target="_blank">mark@ziliant.com</a>><o:p></o:p></p><p class=MsoNormal>Hi,<br><br>I have a very simple setup for a closed network of users (all NAT'ed) with<br>one OpenSIPS server (also NAT'ed).<br><br>I have managed to solve my first problem with registration by following<br>previous posts and using fix_nat_register(), but I am still having problems<br>with NAT issues during a call. I know that I probably need to use<br>fix_nat_contact() and fix_nat_sip() but I can't figure out how to use these<br>properly through the documentation.<br><br>I have tried to search for examples of opensips.cfg that suit my scenario<br>but all the ones I found are complicated with proxies etc. Can someone point<br>me to simple example of opensips.cfg that takes care of NAT?<br><br>Regards<br>Mark Currie<br><br><br>_______________________________________________<br>Users mailing list<br><a href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><br><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users" target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>