OpenSnitch, an application-based firewall, protects you from unwanted data leaks by letting you set customized rules for all your applications. The main thing that OpenSnitch does is track internet requests made by applications you have installed.
An application firewall can reveal what's going on behind the user's back. While conventional firewalls examine the data flow packets to and from the CPU, an application firewall takes an application-specific view when monitoring the outgoing data flow.
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OpenSnitch: a simple application firewall for GNU/Linux - RS1 Linux Tools#
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security #
firewall #
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opensource 
OpenSnitch is an application firewall with a simple graphical interface that allows to easily accept or deny network connection to any program.
