ZMODO IP Camera User Manual page 33

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To reach port forwarding on a D-Link router, first navigate to the advanced tab.
Then, on the left hand side, select virtual server.
Under name, you can just put down DVR
The private IP is the IP address of the DVR
The private and public ports should be set to the same value, which is the port
you're trying to forward.
Be sure to choose always, and hit apply.
Repeat as necessary until all ports are forwarded.
If successfully set DDNS in "network setting" of the IP camera, then you can
visit the IP camera by typing your DDNS domain name into an Internet Explorer
browser.
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