Polycom VSX/HDX Private IP vs Nat'd IP
Posted on 2013-10-29
I’ve got a bit of a weird problem with a few of our Polycom VSX and HDX systems and talking to one another. The Polycom systems that are on the same IP Subnet or routed to a separate IP Subnet via Private WANs are unable to communicate with each other.
I’ve done a packet capture and what the call signalling is happening perfectly fine when using TCP, but as soon as UDP packsets start to flow the Polycom systems are using the External Nat’d address, which of course is screwed by the routing tables.
How do make it so the Polycom systems are only adding the private IP addresses to their packets and have our Firewall/Router handle all the NATing ?