Checkmk DMZ 2 hosts the same settings

I have create rule for incoming port 6556 goes to local IP server and port 6556
also rule for incoming port 8000 to go on local Ip server 8000 port. And still doesn’t work.
What kind of rule I need to create for the Host? “The rule you need is " TCP port for connection to Checkmk agent”" If ports are the same?