Well if you have right now only 1 PC in your LAN which you want to monitor you only need to set port forwarding of port 6556 to your local IP of PC, make host on CMK server with public IP address of router and it should work.
Well if you have right now only 1 PC in your LAN which you want to monitor you only need to set port forwarding of port 6556 to your local IP of PC, make host on CMK server with public IP address of router and it should work.