I downloaded a trial version of netnanny. Found I could export all the banned sites....and imported them into our Netscape server. You can add such lists to squid...but I have not done so....as we use netscape proxy.
How did you do this? Usually such companies try hard to make sure that their lists can't simply be exported...
Of course...most/many schools internet providers have some form of filtering available. It also helps to 'force' the search engine to be one of those 'family friendly' types - and add the others
Though remember that "family friendly" might not equate to "school friendly" there being plenty of places which are inappropriate since kids waste time on them rather than doing work as well as potentially things related to news, politics, history, etc. which whilst appearing in a commercial software block list might actually be relevent to the curriculum.
to your list of banned sites. (Actually we don't do this...)
-- Mark Evans St. Peter's CofE High School Phone: +44 1392 204764 X109 Fax: +44 1392 204763