content: Also, the best way to set up your cameras is on a private net with no direct access to the internet. Whenever possible I set mine up on a manually addressed 10.0.x.x network all hooked to their PoE switch, then that switch is hooked to the 2nd NIC On the Network Video Recorder.  The 1st NIC is the one plugged into the Network with internet. Even if there IS a backdoor in the cameras no one can talk to them without physical access or hacking the NVR.