Hi Sergiu, Thanks for the suggestion! I've not encountered this on a sufficiently widespread basis that I personally feel it merits inclusion in the article, given its already rather broad scope. However, I will certainly have a think on whether there it ought to be incorporated into additional commentary of some sort on edge cases and that.
On Mon, May 14, 2018 at 01:27:23PM -0400, Sergiu Pojoga wrote: > Hi Alex, > > Glad to see the mention of SIP Outbound in your updated article. Here's > another 5+5 cents of mine that might help others in the future. > > May be you faced it, may be not, but in the multi-homed scenario that you > describe in your article, there may be circumstances under which calls > towards the NAT'ed phone will fail mysteriously. Reason being Firewalls of > some ISPs or Enterprises that do packet inspection will reject such SIP > requests due to presence of private IP addresses in the VIA and > Record-Route headers (those of the SIP farm servers). > > The solution to overcome this impediment was quite simple and unexpected > for me - TLS encrypt your SIP traffic, which renders firewall packet > inspection to... a black hole :) > > Same technique bypasses whatever 'smart' ALG Router there might be at > client's premises. > > Cheers, > --Sergiu > > > On Sat, May 12, 2018 at 2:33 AM, Alex Balashov <[email protected]> > wrote: > > > Thank you, but the scope is ambitious enough that I think it would make > > most sense to limit it to Kamailio-native approaches only. > > > > On May 12, 2018 8:31:58 AM GMT+02:00, Mojtaba <[email protected]> wrote: > > >Hi, > > >That's greats concept in this regards. > > >I think it could be great to describe about SEMS (e.g B2BUA, > > >NAT-Traversal) and working it with Kamailio. > > >The SEMS has proper modules to solve NAT Traversal in Kamailio,too > > >If you want, I could give you it's documents. > > >Thanks With Regards.Mojtaba > > > > > >On Fri, May 11, 2018 at 6:43 PM, Alex Balashov > > ><[email protected]> wrote: > > >> Hi, > > >> > > >> I have updated this article with some other topics: > > >> > > >> > > >http://blog.csrpswitch.com/server-side-nat-traversal- > > with-kamailio-the-definitive-guide/ > > >> > > >> "The definitive guide" is of course an ambitious and moving target, > > >so > > >> there may be more evolution in the future. > > >> > > >> -- Alex > > >> > > >> -- > > >> Alex Balashov | Principal | Evariste Systems LLC > > >> > > >> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > > >> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > >> > > >> _______________________________________________ > > >> Kamailio (SER) - Users Mailing List > > >> [email protected] > > >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > > > > > > > > > >-- > > >--Mojtaba Esfandiari.S > > > > > >_______________________________________________ > > >Kamailio (SER) - Users Mailing List > > >[email protected] > > >https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > > > > -- Alex > > > > -- > > Sent via mobile, please forgive typos and brevity. > > > > _______________________________________________ > > Kamailio (SER) - Users Mailing List > > [email protected] > > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
