Step by step guide for configuring Link Layer based filtering:
Enabling/Disabling Allow and Deny Link Layer filters.
1. From the Network Administration group, start DHCP Manager. The DHCP Manager window appears.
2. Under the server node for which you want to configure Link Layer based filtering, go to IPv4 node.
3. From the right click menu, choose Properties. This shows the properties page for IPV4 node.
4. Go to the filter tab, check/uncheck the checkboxes to enable/disable MAC based allow or deny filters.
5. Choose Ok when done.
Also filters can be enabled/disabled the command line
netsh dhcp server v4 set filter EnforceAllowList=0 EnforceDenyList=1

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