# External network connection error, # DDNS connection failure
# XRN-420S
1. Installation Cases
- There were an external network connection error and an DDNS connection failure.
2. Symptoms
- The system was connected to the network, but DDNS was not accessible.
3. Causes
- “Auto” used for NVR DNS server IP address + error in Router’s DNS IP setting
[Incorrect Procedure]
(1)NVR DNS was set to “Auto”
(2)Entered the Router DNS IP incorrectly.
(3)The external domain was inaccessible
(4)DDNS connection failed
4. Measures
- Precautions for DNS IP settings
① Auto : Recheck the router DNS IP address
② Manual: Set the correct DNS server IP address (e.g. 168.126.63.1 / 8.8.8.8, etc.)
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