I'm trying to restrict devices from getting an IP from my DHCP server. I'm using Windows Server 2012. I followed the steps in this TechNet...
https://blogs.technet.microsoft.com/teamdhcp/2012/09/15/scope-level-link-layer-filtering-using-dhcp-policies-in-windows-server-2012/
but I am still able to connect and get an IP with a device that I didn't add to the allow list.
Reading that TechNet, I don't see where it actually says "Deny" in the policy. The author is selecting "Allow" but the way it appears is that his policy will Allow devices with those MACs to get the "Options" that can be selected in the last page of the Wizard. He doesn't select any options.
Am I missing something here? How can I deny devices I don't specify to connect to this Scope?