You will have to configure the server to connect to as the Internet IP adress of the Server's router. Then you will have to configure port forwarding of the Octopus ports (7612 by default) from the router to the server's internal network IP adress. Be sure to configure the ports for Octopus in your firewall as well. After doing all that it should work. I'm not sure how octopus transmits its data but it could be possible that you are opening your account info to being transmitted plain text across the internet. If you use the blizzard authenticator's then it may not be an issue for you. With all that said I wouldn't personally do it because I'm ultra paranoid.