We have an issue with one freeswitch server behind nat. We have a setup like this:

-One master Freeswitch server

-One freeswitch server connected to the master (Public IP) - Server A

-One freeswitch server connected to the master (behind nat) - Server B

If server A call server B, nothing happens. There is no sound. After 30 sec, it times out. We have done a tcpdump. From server A to master packets are ok. From Master to server B, we have seen that there is no source and no destination ports for sip invite.

If we use our cellphone and we call server B, there is no problem.

I have attached the failed call pcap file and freeswitch's log file so you can take a look at them.

Master = Freeswitch v1.4.13

Server A = Freeswitch v.1.4.13

Server B = Freeswitch v.1.4.14 (Updated to latest release since we have issues with this server)

Thanks in advance.

PS: The failed call is from 514-448-0773.