The Kerio Control Web Filter is not a free feature. It requires a specialized, paid license that is separate from the base firewall license. The most common scenario leading to this error is an expired or improperly applied license.
Allow these destinations from the Kerio Control appliance (not just LAN clients):
This issue stems from communication failures between your firewall instance and Zvelo , the third-party backend database provider that powers Kerio's cloud-based content categorization engine. Root Causes of the Web Filter Disablement
Your firewall automatically disables categorization when backend synchronization loops fail. The security framework relies on persistent, low-latency lookups to classify active browsing sessions. The primary causes for this specific disruption include:
If you want, I can produce a tailored checklist or step-by-step script for your specific Kerio Control version and environment—tell me the appliance OS/version, whether you use cloud categorization, and any recent changes.
Open the primary configuration file located at /opt/kerio/winroute/winroute.cfg . Find the DiaServerUrl property.
Verify that you have at least one Content Rule active that requires categorization; the filter often only "activates" when a rule is processing traffic. Using Kerio Control Web Filter - KerioControl - GFI
Under the section, add explicit rules for the following URL pattern: *.zvelo.com Forward that traffic to stable public servers: Cloudflare : 1.1.1.1 OpenDNS : 208.67.222.222 or 208.67.220.220 Click Apply to save changes.
: The Web Filter module is a premium add-on. If your software subscription or trial license lapses past 30 days, the entire categorization infrastructure is automatically disabled. Phase 1: Resolving DNS Failures and Token Issues
Web Filter categorization disabled. Serial number: ko-197974
If your Kerio Control appliance cannot resolve external domain names, it cannot reach the activation servers.
Check the box for and click Edit (or Add ). Set the DNS name field to exactly *.zvelo.com .
Kerio Control Web Filter Is Not Activated Categorization Is Disabled Hot ((install)) «FRESH • EDITION»
The Kerio Control Web Filter is not a free feature. It requires a specialized, paid license that is separate from the base firewall license. The most common scenario leading to this error is an expired or improperly applied license.
Allow these destinations from the Kerio Control appliance (not just LAN clients):
This issue stems from communication failures between your firewall instance and Zvelo , the third-party backend database provider that powers Kerio's cloud-based content categorization engine. Root Causes of the Web Filter Disablement
Your firewall automatically disables categorization when backend synchronization loops fail. The security framework relies on persistent, low-latency lookups to classify active browsing sessions. The primary causes for this specific disruption include: The Kerio Control Web Filter is not a free feature
If you want, I can produce a tailored checklist or step-by-step script for your specific Kerio Control version and environment—tell me the appliance OS/version, whether you use cloud categorization, and any recent changes.
Open the primary configuration file located at /opt/kerio/winroute/winroute.cfg . Find the DiaServerUrl property.
Verify that you have at least one Content Rule active that requires categorization; the filter often only "activates" when a rule is processing traffic. Using Kerio Control Web Filter - KerioControl - GFI Allow these destinations from the Kerio Control appliance
Under the section, add explicit rules for the following URL pattern: *.zvelo.com Forward that traffic to stable public servers: Cloudflare : 1.1.1.1 OpenDNS : 208.67.222.222 or 208.67.220.220 Click Apply to save changes.
: The Web Filter module is a premium add-on. If your software subscription or trial license lapses past 30 days, the entire categorization infrastructure is automatically disabled. Phase 1: Resolving DNS Failures and Token Issues
Web Filter categorization disabled. Serial number: ko-197974 The primary causes for this specific disruption include:
If your Kerio Control appliance cannot resolve external domain names, it cannot reach the activation servers.
Check the box for and click Edit (or Add ). Set the DNS name field to exactly *.zvelo.com .