Windows Server 2008 Core introduces some challenges in administering servers without an explorer shell. Here are some netsh commands that will help you administer your Server Core installation remotely through MMC snap-ins.
Allowing Administration of Server Core from a Remote MMC
To administer the Server Core installation from a remote MMC you must configure the Windows Firewall.
If you do not configure the firewall to allow remote administration via MMC you will get an error. For example:
When you attempt to connect to a Windows Server 2008 Core installation via Device Manager you may receive the following message:
Unable to access the computer “ComputerName” Make sure that this computer is on the network, has remote administration enabled, and is running the “Plug and Play” and “Remote registry” services.
The error was: Access Denied