Summary:

If DNS is set to Auto in NVR, network connection is possible, but DDNS connection is not possible.

Step By Step Guide:

Cause

- In NVR, the DNS server address was set to Auto mode, and the wrong IP address was set in the DNS of the router.

Counterplan

- Set the correct DNS IP address

  ① Auto: Verify the DNS address of the router

  ② Manual: Set up the correct DNS server

       ex) 168.126.63.1 / 8.8.8.8.8, etc