Firewall rules

Firewall rules are a set of conditions that are used to test all network connections and determine the appropriate actions for these conditions. Using the firewall rules, you can define the type of action to take when a connection defined by the rule is established.

Incoming connections are initiated by a remote computer attempting to establish a connection with the local system. Outgoing connections work in the opposite way – the local system contacts a remote computer.

If a new unknown communication is detected, you must carefully consider whether to allow or deny it. Unsolicited, unsecured or unknown connections pose a security risk to the system. If such a connection is established, we recommend that you pay particular attention to the remote computer and the application attempting to connect to your computer. Many infiltrations try to obtain and send private data, or download other malicious applications to host workstations. The firewall allows you to detect and terminate such connections.

By default, applications signed by Apple can automatically access the network. If you want to disable this, deselect Allow software signed by Apple to access the network automatically.