If my WAN IP is dynamic and I configure the settings within the cam for DDNS (no-ip.com), do I have to have a computer running onsite where the camera is to update the IP? I need to do a cam install at a vacation home that is not occupied 24/7. If all I need to do is change the DNS settings on the cam/NVR then it sounds easy. The home does not have a computer running 24/7.