This article explains how you can enable Hibernation on multiple computers using a CMD script or Group Policy.
This article explains how you can check if a port is listening on multiple computers.
This article explains how can you check quickly if the ports are listening or blocked by the firewall.
What to do if you try to install Exchange 2010 and get an error saying that the DNS server could not be resolved.
If you have a Windows Server that has RRAS installed and you need to use your server for some other purpose, here's what you need to do first before you remove the RRAS role.