Hi Joonas, Well, that's right -- Kamailio is not especially well-suited to forwarding traffic among more than a handful of interfaces, for precisely the reasons you have discovered.
There are some ugly hacks around some of it available, but none are pretty nor come recommended. -- Alex On Mon, Oct 08, 2018 at 11:34:44AM +0300, Joonas Kamailio wrote: > Dear List, > > I am trying to achieve a scenario where I can recognize the original peer > and mask it as peer from subnet 10.0.7.0/24 with kamailio. Basic IP > connectivity is established with the following network configuration > (Debian9): > > auto lo:1 > iface lo:1 inet static > address 10.0.0.0/24 > > And of course I have routed 10.0.0.0/24 to servers public IP address (hereby > known as x.x.x.1) in my router. > > Please consider the following scenario: > > - Peer1 192.168.0.1 is sending INVITE to kamailio at IP x.x.x.1 > - Kamailio sends INVITE to peer2 at 172.10.0.1 from socket 10.0.0.1 > - Peer2 receives the INVITE and knows that since it came from IP 10.0.0.1 it > means that INVITE is originally from peer1 > - IF peer2 sends INVITE to kamailio, it should be sent to peerX from socket > 10.0.0.2 > > This works if I list both 10.0.0.1 and 10.0.0.2 with 'listen=' parameter but > things get out of hand if I have multiple peers. In my tests I have noticed > that 60 peers equals 60 listen parameters which equals roughly 500 kamailio > processes. At some point there are just too many processes and everything > melts. If I omit the listen parameter altogether, kamailio has only one > socket from /24 subnet and it is 10.0.0.0. > > Error message when listen parameter is omitted: > [pv_core.c:2612]: pv_set_force_sock(): no socket found to match [10.0.0.1] > > My kamailio has the following configuration in request_route: > > $avp(e_private) = $(sht(get_private=>$si)); > $fs = $avp(e_private); > > I know that the case is a bit confusing and totally something normal people > won't do. If you have any questions I am happy to answer. > > Best Regards, > Joonas Keskitalo > > > _______________________________________________ > 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
