Impasse is the simplest and most flexible firewall configurator available for Mac OS 10.2. The feature that sets Impasse apart from the built-in firewall in OS X 10.2 is the real time logging tool. By watching the Impasse Log pane, attemps to access your computer appear as "denied" packets immediately. Using Apples built-in firewall, there is no easy way to tell that you are truly being protected.
