If you are trying to setup your DSL router/Firewall for remote access to your Security DVR system, you need to open the port on your Router. You need to login to your router by opening Microsoft internet explorer and pointing it to your router local IP address (check your router documentation) after logging in to your router look for PORT FORWARDING Or PINHOLE in your router setting. In there you need to specify the port your remote security DVR is listening at. The port will be specifying in your DVR docs. The IP address you need to specify the local IP address of your DVR system (NOT YOUR DSL IP). After saving and restarting your router go to  http://www.canyouseeme.org/ and specify the port you setup in your router.  The result should show that the port is open.  Repeat until you get positive result