What I would like to do is to completely block two computers on my home network from accessing the Internet during a given time of day.
So say we got a computer A, a computer B and a computer C. We want to allow computer B and computer C to access the Internet (the WAN side of the network) from 07:00 to 16:00. From 16:00 to 07:00 we don't want these two computers accessing the Internet, at all! At the same time, we want computer A to have Internet access all the time.
What do I need to create this kind of rule? Do I need a home server (I'm thinking in the terms of domain controller, etc.)? Can I do this in the router of the network?
Please note that I am not looking for a way to restrict access to certain web sites. I want to completely block Internet access for a given computer (s) during a given time of day.
One solution that comes to my mind is "parental control" feature that many anti-virus software suits have. But I feel that this method is decentralized and a little bit complex. You know... having to install the software on all computers, remembering master passwords, not to mention having to buy a volume license for the software.