: Do not use Google DNS (8.8.8.8) for all requests, as it can sometimes cause issues with Zvelo authentication.
The Web Filter requires a specific active license; without it, the module behaves as a trial and will automatically disable after 30 days.
: Hold the Shift key while navigating to Status > System Health in the admin interface, then click Enable SSH .
Note: This will restart the Kerio Control service and may cause a brief internet interruption.
The Web Filter uses an external service (Zvelo) which requires a valid authorization token. These tokens expire every . If your DNS settings prevent the token from renewing, categorization will be disabled.
Kerio Control is designed to disable the Web Filter if it fails 10 consecutive DNS checks to reach the update servers within one minute. You can force it to ignore these failures and keep the filter active by using the SSH console.
cd /opt/kerio/winroute ./tinydbclient "update SiteFilter set DetectReliability=0" /etc/boxinit.d/60winroute restart Use code with caution.
If the filter is activated but still blocking legitimate sites, you can bypass the categorization engine for specific URLs. Using Kerio Control Web Filter
: Navigate to Configuration > DNS . Check Enable custom DNS forwarding and add a rule for *.zvelo.com to use Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) instead. 3. Fix Licensing and Activation Issues
: Do not use Google DNS (8.8.8.8) for all requests, as it can sometimes cause issues with Zvelo authentication.
The Web Filter requires a specific active license; without it, the module behaves as a trial and will automatically disable after 30 days.
: Hold the Shift key while navigating to Status > System Health in the admin interface, then click Enable SSH . : Do not use Google DNS (8
Note: This will restart the Kerio Control service and may cause a brief internet interruption.
The Web Filter uses an external service (Zvelo) which requires a valid authorization token. These tokens expire every . If your DNS settings prevent the token from renewing, categorization will be disabled. Note: This will restart the Kerio Control service
Kerio Control is designed to disable the Web Filter if it fails 10 consecutive DNS checks to reach the update servers within one minute. You can force it to ignore these failures and keep the filter active by using the SSH console.
cd /opt/kerio/winroute ./tinydbclient "update SiteFilter set DetectReliability=0" /etc/boxinit.d/60winroute restart Use code with caution. If your DNS settings prevent the token from
If the filter is activated but still blocking legitimate sites, you can bypass the categorization engine for specific URLs. Using Kerio Control Web Filter
: Navigate to Configuration > DNS . Check Enable custom DNS forwarding and add a rule for *.zvelo.com to use Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) instead. 3. Fix Licensing and Activation Issues