Kerio Personal Firewall controls all applications in the operating system, regardless of whether they are deployed into network communication or not. Therefore it can detect when an application is infected by a new virus or attacked by a Trojan horse immediately (it usually takes some time when an antivirus is used — a new virus must be detected and then an appropriate virus database must be found).

Go to the Behavior Blocking section to set behavior blocking parameters (parameters for application control).

Check/uncheck the Enable Behavior Blocking option to enable/disable control of starting applications. If this option is disabled, running applications is ignored by Kerio Personal Firewall.