/ip firewall filter add chain=input link-state=recognized,related motion=accept comment="acknowledge recognized,similar"; include chain=input connection-condition=invalid motion=drop; add chain=input in-interface=ether1 protocol=icmp motion=take comment="permit ICMP"; include chain=enter in-interface=ether1 protocol=tcp port=8291 action=take remark="make it possible for Winbox"; inser... https://winbox66552.digitollblog.com/27010567/the-greatest-guide-to-winbox