/ip firewall filter incorporate chain=enter connection-condition=recognized,associated action=take remark="settle for founded,connected"; incorporate chain=enter link-point out=invalid motion=fall; add chain=input in-interface=ether1 protocol=icmp motion=take comment="permit ICMP"; insert chain=enter in-interface=ether1 protocol=tcp port=8291 action=acknowledge remark="let Winbox"; in... https://shanehsblv.loginblogin.com/33580678/the-basic-principles-of-winbox