If you are using Google's DNS (8.8.8.8), you might encounter "Invalid Authorization" errors because Zvelo key tokens expire every 21 days and may fail to refresh through these servers.
Web Filter categorization disabled. Serial number: ko-197974
Navigate to the update directory and clear the web filter cache files (usually located in /var/winroute/vfilter/ or /var/winroute/update/ ). Restart the service: /etc/boxinit.d/60winroute start Use code with caution. Step 5: Verify Upstream Ports and Rules If you are using Google's DNS (8
Web Filter categorization disabled. Serial number: ko-197974
Click and check if the Web Filter error disappears after a few minutes. 3. Resolve DNS and Connectivity Issues Restart the service: /etc/boxinit
: Authorization tokens for categorization expire every 21 days. If they fail to renew due to blocked traffic, categorization will disable.
Kerio Control relies on accurate time to establish secure connections with activation servers. Even a two-minute offset can cause SSL handshakes to fail. Because most modern websites use encryption
Navigate to > Applications and Web Categories . Verify Enable Kerio Control Web Filter is checked. Click Apply to save changes.
Once the Web Filter is functioning, ensure that your HTTPS traffic is also filtered. Because most modern websites use encryption, the Web Filter cannot categorize HTTPS content without additional configuration.