blok scan winbox

/ip firewall filter
chain=forward in-interface=ether1 mac-protocol=ip dst-port=5678
ip-protocol=udp action=drop
chain=input in-interface=ether1 mac-protocol=ip dst-port=5678
ip-protocol=udp action=drop
chain=output mac-protocol=ip dst-port=5678 ip-protocol=udp action=drop
chain=input in-interface=ether1 mac-protocol=ip dst-port=8291
ip-protocol=tcp action=drop
chain=forward in-interface=ether1 mac-protocol=ip dst-port=8291
ip-protocol=tcp action=drop
chain=input mac-protocol=ip dst-port=68 ip-protocol=udp action=drop