Question on NAT usage and Record Route
Martin Nyström via sr-users <[email protected]> Fri, 29 May 2026 08:40:59 +0000
| Newsgroups | gmane.comp.voip.ser |
|---|---|
| Message-ID | <GVXPR02MB11694075A290B518700CA403FF6162@GVXPR02MB11694.eurprd02.prod.outlook.com> |
HI, Our outbound traffic from Kamailio pass via Amazon NAT Gateway. The issue is that the NAT Gateway provided by AWS clears its table after 350s. This causes INVITE refresh after 900s to fail because the PBX sends the SIP to the Amazon NAT Gateway source IP : port and it is dropped by the NAT Gateway since the session do no longer exists. It appears we cannot change the AWS NAT Gateway timeout, so we either need to drastically reduce the timer setting which I do not want, or find another way. Can we in the signalling tell the PBX to reply not to the source ip and port but instead directly to the Kamailio FQDN? I am thinking Record Route would solve this, but before I start fiddling with it I’d like some feedback from the experts if that is the way. We’re using Kamailio 6.1 with 5061/TLS. /M __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions -- [email protected] To unsubscribe send an email to [email protected] Important: keep the mailing list in the recipients, do not reply only to the sender!