Our POA network address settings were 7191 for both internal and external SOAP connections. We are not using SSL. When our datasync server in the DMZ connects on 7191, the address redirection responds with a LAN ip rather than the External (DMZ) ip configured in the POA network address tab. Assuming redirection is based simply on the which port the connection attempt is made, I incremented the external SOAP port to 7192 and attempted a telnet connection to 7192 which was refused.

I've done a POA reload and server restart and still a telnet from LAN to 7192 is refused.
The "internal" SOAP port 7191 responds as expected both from LAN and DMZ. Connections on 7192 are refused.