Only allowed mac add. conenct to my network?

[notaduck]

I was wondering if it is possible to setup a function so only allowed mac addresses can connect to my internet and are handed out a static IP?

[johnpoz]

Yeah on your dhcp server tab

Deny unknown clients
If this is checked, only the clients defined below will get DHCP leases from this server.

Enable Static ARP entries
  Note: This option persists even if DHCP server is disabled. Only the machines listed below will be able to communicate with the firewall on this NIC.