add chain=input comment=Cloud in-interface=WAN_interface protocol=udp src-port=15252
There are 2 rules to permit INPUT and forward passing established connectionsmaybe you have deleted the default firewall rule that allows "established" connections?
CPU -> output -> cloud server -> reply -> same (related/estabilished) connection before -> CPU
I do not know if you have reply to my post before I complete it:this:
cloud server makes no connection, the routerboard asks and gets reply in established connection. accepting established should be enoughCode: Select allCPU -> output -> cloud server -> reply -> same (related/estabilished) connection before -> CPU