Kerio Control Web Filter Is Not Activated Categorization Is Disabled Hot

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Investigation & Resolution of Web Filter Categorization Disabled in Kerio Control

Upstream ISPs often drop or throttle heavy volumes of short-lived TXT/DNS requests generated by real-time classification engines. Route zvelo-specific tracking requests away from local ISP infrastructure to high-availability alternative public resolvers. Log into your interface. Navigate to Configuration > DNS . Navigate to

Kerio Control uses DNS queries to reach its update and categorization servers. If your ISP or current DNS configuration is slow or blocking these requests, the filter will deactivate.

Older versions of Kerio Control rely on legacy update server URLs that may have been decommissioned or changed by GFI Software. Route zvelo-specific tracking requests away from local ISP

Go to Configuration > Network > Interfaces to check your primary DNS.

: After making these changes, test the web filter to ensure it's working as expected. Try accessing a website that should be blocked based on your settings. Kerio Control uses DNS queries to reach its

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