CloudFlare DNS (1.1.1.1) is not functioning properly on WebGUI test
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Zyxel_Kevin
Posts: 981 
Zyxel Employee
Zyxel Employee
in Maintenance
Question:
CloudFlare DNS (1.1.1.1) is not functioning properly when tested via a Zyxel Firewall's WebGUI, leading to resolution failures or timeouts. How can this be resolved?
Answer:
The issue where CloudFlare DNS (1.1.1.1) appears not to function correctly during a Zyxel Firewall's WebGUI test, resulting in "Not implemented" responses or "connection timed out" messages, is typically due to a specific behavior of the 1.1.1.1 DNS server itself, rather than a firewall malfunction.
- Root Cause: The CloudFlare DNS server (1.1.1.1) does not respond to DNS queries of
TYPE=ANY. While standard A record lookups
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