1, first of all, your computer to install the video capture card software needs to support the port function, generally more than 80% of the surveillance video capture card on the market support this function.

2, the monitoring computer is best connected to the router device to access the Internet, because the router supports DMZ host settings and port mapping function, this function allows the router to monitor your computer's port to do a good job of mapping, mapping to the wide area network, at any time waiting for the user to connect and view the monitor screen.

3. After the router port mapping is set up, if there are other computers on the LAN, you can try to enter the IP address of the monitoring computer on other computers on the LAN to see if it can be accessed. If it cannot be accessed, then it proves that the port forwarding and mapping is not set up correctly, and if it can be accessed and the monitoring screen of the host computer can be viewed, then it proves that the router port forwarding and mapping is good.

4. After the LAN is accessible, what we need to do now is how to make the computers on the WAN accessible to the monitoring host. In fact, it is very simple, we can use dynamic domain name software can be.