Particularly useful if your hosting company wants more money for password protection. Docs are a tad bit slim, could be developed into a short tutorial on Unix system-level password protection. 2 USA Wouldn't work for me. This program doesn't specify what to put in the variables, I may know perl, but it still confused me. The admin interface is quite clean and easy to use with many options.
Script is easy to istall, configure and use.
I disagree with previous comments on freebsd, worked fine. No knowledge of Unix required. Outdoes the rest. 2 Probe was installed and completely customized for me quickly and effectively. It had most of the features I desired built into it to begin with and what it didn't have was created for me with a day.