[$] Application monitoring with OpenSnitch

OpenSnitch is an"interactive application firewall". Like other firewalls, it uses aseries of rules to decide what network traffic should be permitted. Unlikemany other firewalls, though, OpenSnitch does not ask the user to create a list of rulesahead of time. Instead, the list of rules can be built upincrementally as applications make connections - and the user can peruse boththe rules that have built up over time, and statistics on the connections thathave been attempted.