How to block internet in Windows Server 2012?

Block internet using group policy!!

In this video I have shown only how to block internet access on "Computer", but you can block for "User" too. After applying Group Policy, some selected users will have no internet access, but the other AD users who have not been transferred to the OU whom you applied this policy will have internet access. *However, it completely depends on the computer configuration.

Some IT people simply use "etc" file to block internet. The location of this file C:\Windows\System32\drivers or open up Run and type "drivers" without quotes and hit enter for "Standalone" (Server) or "Workstation". Group Policy can also be used, it depends which one you choose.

This video will help you block complete Internet access for a specific "User" or "Computer".