: When an application attempts an operation without a defined rule, a notification appears with detailed information (Process ID, IP address, port) to help you decide whether to allow or block it.
Since the tool is no longer actively maintained, you might consider these current industry standards for Mac security: Hands Off! 4.0.0
: A simpler, "annoyance-free" alternative that works silently in the background without pop-ups or alerts. : When an application attempts an operation without
: Beyond network monitoring, it can block applications from reading or writing to specific files on your disk to protect sensitive data. Hands Off! 4.0.0
: It tracks both inbound and outbound network connections to prevent applications from "phoning home".
HandsOff an Ultimate Firewall for your Mac | Lucideus Research