Customize the firewall rule for an application on Mac (Norton)

A firewall is a security system that uses rules to block or allow connections and data transmission between your Mac and the Internet. Firewall rules controls and protects your Mac from malicious programs and unauthorized access. The firewall automatically checks all traffic that comes in or out of your Mac against these rules.

You can use the Application Blocking window to customize the firewall rule for an application. You can use the up arrow and the down arrow next to the name of the application to allow or block Internet access for the application.