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“The specified computer could not be remotely managed.

“There was an error opening the Windows Firewall with Advanced Security snap-in” I was seeing no blocked traffic in the Windows Firewall Logs. Moreover I could not find an easy way to see what the current firewall rules are that are applied via GPO.Īs I have disabled all of the built-in firewall rules as to lock down the Domain Controller Firewall Rules as tightly as possible, even with RPC open and the dynamic RPC range locked to specific ports but open the Windows Firewall MMC would not open. On a GUI version of Windows Server it is very easy to see what firewall rules are applied, in core… not so much, especially if you are pushing them with GPO (Group Policy).Īll of the PowerShell cmdlets and netsh advfirewall commands all seem to return the local firewall rules and not any of the Group Policy pushed firewall rules.

As I’m migrating Domain Controllers over to Server Core one of the major issues I’ve run into is managing the Windows Firewall Rules.