Pull the network cables out and set a long complex password. If you are on a domain using AD you can have upto 128 characters for this. Thats the best way of securing a server.
If you want to just heavily restrict traffic to it look to your firewall policies and default domain/domain controller policy for security.
Last Wiki Answer Submitted: June 3, 2011 12:41 pm by ErroneousGiant3,120 pts.