Ive used the Config tool in the past, but its been years. Didnt recall it being able to see across networks. But logging into the camera GUI is simpler
That is the whole purpose of the Config Tool is to find that camera at 192.168.1.108 subnet and allow the user to then put that camera on whatever their LAN subnet is without having to temporarily change their LAN to the 192.168.1.xx subnet.
Now many by default have their home at 192.168.1.xx subnet, so then the camera is readily visible when plugged in.
It doesn't work on cameras connected behind the NVR, or at least usually LOL.