Hello Chad, You can add a listen directive to your config for the virtual IPs (both public and private) and then you don't need to manually modify any headers or use force_send_socket(). You need to enable non local IP binding so kamailio can start on the server that doesn't have the virtual IP: echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind To make the change permanent, edit your sysctl.conf file and enable it there: net/ipv4/ip_nonlocal_bind = 1
Regards Ovidiu Sas On Sat, Jan 15, 2022 at 4:16 AM Chad <ccolu...@hotmail.com> wrote: > > We are looking for some help (possibly a paid consultant) to help us with our > Kamailio setup. > To keep this as short as possible: we use Kamailio as a NAT proxy to bridge > our external IP and our private IP asterisk > servers (via dispatcher). > However both the external IP and the internal IP that the Kamailio server > uses are virtual IPs created by keepalived. > Because of that neither mhomed nor fix_nated_contact work, and we use > force_send_socket to direct the traffic. > We run linux Debian 10 for the OS. > Also we do not use a DB at all, everything is done with local config files. > > The problem is that when traffic goes out the Contact header has a private IP > in it, like: > Contact: <sip:##########@10.10.10.###]:5060> > > There are 2 possible solutions to this: > 1. Make changes to linux, keepalived and/or Kamailio so that Kamailio > recognize the virtual IPs so that mhomed and > fix_nated_contact work as usual. > > 2. Create a manual header rewrite system. > > If solution #2: > What we need to do is create a way to rewrite the contact header to the > external IP on the way out, and on the way back > rewrite it back to the internal server that the call is already connected to. > > Not sure if we will need to store those paths on the server or if we can do > some kind of cheat with another persistant > header like P-Preferred-Identity or P-Asserted-Identity (i.e. store the > internal IP in the name field or something). > > If anyone out there know of a way to do this or wants to give it a try please > reach out to me. > > Thank you all for your time. > > -- > ^C > Chad > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > * sr-users@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to the > sender! > Edit mailing list options or unsubscribe: > * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- VoIP Embedded, Inc. http://www.voipembedded.com __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
