One thing I like to do, not required though, is set up a port forward in the router instead of DMZing the computer. I would do this for a system security standpoint, ie I forward port 3389 (remote desktop) to the IP of the computer I want to establish a RDC connection to. I also have port 8000 (iVMS-2000 default remote port) forwarded to the IP of my DVR. I also have my router setup to allow remote management. This way say I need to establish a RDC to my DVR computer instead of the other system I have setup I can remotely change the port forward to the DVR and so forth. Also this way severely limits how much of your DVR is exposed to the outside world (internet) limiting what hackers can find and get into. Obviously this will only work if you know or could obtain the port needed for the remote management of your dvr software. I just try to limit the use of DMZ's as much as possible when possible. Just my 2 cents worth that I like to pass along.