Please help me picture your network setup a little better? I understand you have a Nanobeam on your house pointing to another Nanobeam on your barn. In your barn you have cameras and an NVR. You can access your NVR while in your barn but I don't know how you are doing that. Is the NVR plugged into the LAN port of the POE injector? Do you have another router or access point in there or are you plugging your laptop into a switch that is in the barn?