While trying to prevent unauthenticated or unauthorized users and devices from accessing Internet web pages, specific Kerio Control settings should be applied. Internet access can be limited by modifying default Traffic rules.
This article provides a step-by-step procedure on how to allow access only for authenticated users and VPN clients.
- Login to the Kerio Control administration interface and navigate to Configuration -> Traffic Rules.
- Locate the standard Internet Access (NAT) rule, double-click on the Source column, and modify the default items to include Any authenticated user and VPN clients only.
- (Optional) Move the rule to the top of the Traffic rules. The resulting rule will look like the following.
Try to access Internet webpages without authentication. You will be prompted to log in to the Kerio Control firewall.