AWStats is a free powerful and featureful server logfile analyzer that shows you all your Web/Mail/FTP statistics including visits, unique visitors, pages, hits, rush hours, os, browsers, search engines, keywords, robots visits, broken links and more
...Additionally, it is possible to specify that certain executables (typically browsers and email clients) are run with reduced rights. This is a valuable damage-limitation measure against browser plugin vulns, etc.
The protection can be turned off without a reboot whilst installing legitimate software, and will automatically reactivate after a specified time