[techhelp4you]

Hi, my friend epson, a mac address is assigned automatically to any equipment that is hooked to your router, so I believe, you most dedicate one and assign one to the dvr which is why it can be identifie. but it also required that your modem or router open some port, eg port 80, or port 7777. 21, or depending on the brand and manufacturer of the dvr, it will use two set of ports one for internal, connection, or local. the other for remote connection. or external,
the setting need to be adjusted in the Router, first and if you are going to assign a port to open base on mac address I believed the dvr might not work from outside, so if I am not wrong mac registering, might not work at all, with a dvr, I need more info