How to Block MAC Address Device On RouterOS /ip firewall filter add chain=input action=drop src-mac-address=74:EA:3A:xx:xx:xx add chain=forward action=drop src-mac-address=74:EA:3A:xx:xx:xx
/ip firewall filter add chain=input action=drop src-mac-address=74:EA:3A:xx:xx:xx add chain=forward action=drop src-mac-address=74:EA:3A:xx:xx:xx