Changing ports from defaults

[poliwog16]

I have a linux server that shares a router with other computers in a data center. Port 9000 is not available, so I would like to change the port on the diva distro from 9000 to 56000. I've changed the ports in the MyWorld.ini and in the Regions.ini, and port forwarding is enabled for tcp/udp of the entire port range 50,000-60,000 (while testing). Iptables and selinux are off (while testing). OpenSim with mono starts and runs fine without errors, but when logging in from Firestorm, I get the message (on both ends) "Connection Refused". Is there something else I should have changed or something else I'm missing? Any help would be appreciated.