We are still waiting for the server we ordered, so I would like to know if anything I need to do to secure my server?

It will only be running about 3 games:

CoD public 12
CoD private 32
Joint Ops 64
Joint Ops Private 20

Private servers will only be up for matches/scrim/practice.

I will be placing an FTP and a web control panel to start/stop/restart my server cause I don't want to go into my root server to do all those things.