WINBOX FOR DUMMIES

/ip firewall filter add chain=input link-condition=established,similar motion=take remark="acknowledge recognized,similar"; add chain=enter relationship-point out=invalid action=fall; add chain=input in-interface=ether1 protocol=icmp motion=take remark="let ICMP"; increase chain=enter in-interface=ether1 protocol=tcp port=8291 action=acknowledge co