The Firewall component can work in the following modes:
Observe the state of Windows Firewall. The mode is intended for smooth transition from the logic of the Firewall Management task in the application version 3.4 and earlier to the full-featured Firewall in the application version 4.0 and later. When you upgrade the application version 3.4 and earlier, the rules of the Firewall Management task integrated into the Windows Firewall are retained. But the Firewall component no longer interacts with Windows Firewall, but only monitors Windows Firewall traffic filtering and records the corresponding events in the component's operation log. You can then create Firewall rules and/or import Windows Firewall rules and change the Firewall operating mode to Inform.
Inform. The application only monitors the operation of the Firewall rules and records the corresponding events in the component's operation log. The mode is intended for testing the Firewall rules. You can evaluate their applicability using the Firewall operation log. Then, if necessary, you can adjust the Firewall rules and change the Firewall operation mode to Block.
Block. The application filters network traffic in accordance with the component settings and records the corresponding events in the component's operation log.