OpenSnitch is a GNU/Linux port of the Little Snitch application firewall written in Python. You can use it to monitor applications, preventing or permitting them to connect to attached networks through advanced rules. When youire connected to the Internet directly, and your IP address is visible, hackers can generally see your Mac and construct a variety of attacks. Little Snitch is a traditional software firewall for macOS. The firewall in Mac OS X is designed to stop incoming connections. To sum up, Radio Silence is among the best Little Snitch alternatives and we recommend it without any reservation. Thereafter, you can block, inspect or allow the connection without jumping through hoops. It gives you detailed information on all your network communication, whether it's from the outside world coming into your Mac or it's being sent from your Mac to anywhere on the internet.
The answer is simple: Little Snitch does more than just block or allow incoming network connections.How do you keep tabs on and take control of what your Mac is talking to? Objective Development's $45 Little Snitch is the ticket to truly understanding and managing who your Mac makes contact with. It's always sending messages to unseen servers while you go about your daily work. Your Mac is a Net whisperer a sleep talker a teller of tales a spreader of information.