many other pieces of software available for web filtering in that it is
designed to filter web content. That, however, is where the similarities
end. The differences between Willow and other solutions are significant, and
these differences make Willow the first really usable internet filter.
In addition to being the first web filter to really work, Willow was also
designed to make life easy on network administrators. To this end Willow
supports the following:
* HTTPS tunneling
* response caching
* filtering based on any part of the request or response (domain, url,
headers, etc.)
* through-the-web management
* authentication to a Windows NT/2000 domain
* authentication through unix password files
