sbs

I recently did some windows updates on my sbs 2003 server once I did the reboot everything came up however I was unable to remote to the server either through remote web workplace or remote desktop connection. What happened? We do not have the firewall enabled on the sbs server. is this something a simple reboot of the server would fix. I have to do this remotely however what is the proper syntax for rebooting a server via command line? I've seen several commands so which is the proper one