Why is the Content Filter not working and unable to block certain websites?

Zyxel_Jeff
Zyxel_Jeff Posts: 1,317  Zyxel Employee
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Question :

Why is the Content Filter not working and unable to block certain websites?

Answer :

Because the website may rely on DNS over HTTPS/TLS packets, the user needs to select the "drop" action for the "Action When Detecting DNS over HTTPS/TLS Packets" option in the DNS Threat Filter function.

dropp the DNS over HTTPS_TLS packet.png