From my point of view the owner of that server seems to be pretty dumb
It's not that hard, really
One important thing to do, is to make the GlobalManager listen on the LAN interface and not on localhost(obviously, huehue), then he only has to setup the rules to let you, and only you, connect to the server and you have to edit the IP in the config of SMC to connect to his server
I can't believe that it's that easy, can you?
mfw