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The list (Firewall > Available Services (Figure 4.1), indicates the service status - whether the firewall is configured to let that service work (Active) or it is configured to block those service gates (Inactive).
Note that defining here a service as Active doesn't start the service nor stops it. The single change implemented in the Definitions Update only affects the firewall service (first it stops, reconfigures and then restarts). In other words, here you can only configure the firewall to open or to shut the Internet gate for a defined service (whether the service is working is another configuration besides this section).

Figure 4.1: Firewall - Available Services