: Ensure your Kerio Control Web Filter license is active and registered. ISP Connection Issues
After modifying your DNS settings, it is highly recommended to reboot the Kerio Control firewall so the changes take effect system-wide. 3. Resolve Zvelo "Invalid Authorization" Errors
Based on official Kerio Control support documentation, this issue is typically triggered by one of several underlying problems:
: Log in to the Kerio Control administration interface. This usually involves navigating to http://<your-kerio-ip>:4081/admin (though the exact URL might vary based on your setup). : Ensure your Kerio Control Web Filter license
Are you seeing any ?
This error indicates that Kerio Control cannot verify its license or reach the categorization servers, typically due to DNS timeouts license expiration support.keriocontrol.gfi.com Quick Fixes Check DNS Forwarders : Use reliable DNS servers like Cloudflare (1.1.1.1) or
: Navigate to Configuration > Content Filter . Check your custom content rules; if they were grayed out during the outage, they will return to their functional colored status. This error indicates that Kerio Control cannot verify
Web Filter categorization disabled. Serial number: ko-197974
Via SSH/Console (if needed):
In the Web Admin interface, head to > Advanced Options . Select the System Time or Date and Time settings tab. : Ensure your Kerio Control Web Filter license
If the user is connected through a guest interface, Kerio Control disables the Web Filter for that traffic by default. Managing "Lifestyle and Entertainment" Content
What are defined on your WAN interface?
Reboot the system to flush the internal caches and apply your changes. Phase 2: Disabling the Internal Reliability Checker via SSH
In the Webadmin panel, press and hold the key on your keyboard and click on Status > System Health . Click the newly revealed Enable SSH button. Accept the security warning dialog box. Step 2: Modify the SiteFilter Database