Have there been any recent in your environment?
Kerio Control Web Filter Not Activated: Troubleshooting Categorization Disabled
Kerio Control contacts external cloud servers (powered by Cyren or Webroot, depending on your version) to categorize URLs. If the firewall cannot resolve these server addresses, it assumes the service is disabled.
Once your Web Filter is operational, implement these preventive measures to avoid recurrence: Have there been any recent in your environment
After implementing the fixes, verify that the Web Filter is correctly categorizing websites.
Before diving into the solutions, use this checklist for a quick diagnostic overview:
: A full disk can prevent the license file from saving. Use SSH to check disk space and clear cache files in /var/lib/firebase if necessary. 4. Troubleshooting Miscategorized or Blocked Sites Once your Web Filter is operational, implement these
If the web filter is disabled due to a "temporary" DNS issue, you may need to force it back on via SSH. Login to Kerio Control via SSH.
: It is highly recommended to use Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) as custom DNS servers for *.zvelo.com URLs.
If you see "Web Filter is not reliable" in the logs, treat it as an indication of ISP instability or faulty DNS configurations. or unproductive web categories
Several factors can contribute to the Kerio Control web filter not being activated, including:
The Web Filter requires a specific active license; without it, the module behaves as a trial and will automatically disable after 30 days.
Before troubleshooting the configuration, ensure your license is active. Go to -> Dashboard . Click on License .
When your GFI Kerio Control firewall throws the error your network security takes a major hit. This error immediately stops the system from dynamically identifying malicious, inappropriate, or unproductive web categories, potentially freezing user internet access or exposing your network to threats.
