Maverick wrote;The library will not restrict the computers from these kinds of sites...
This is a question libraries have been facing for well over a decade. The bottom line is; it's nearly impossible to restrict access by technical means. There are many ways to subvert filters. Plus, with web hosting companies putting many sites on the same IP or block of IPs, censoring a porn site could also block sites with valuable resources.
Then there's the grey areas, like google image search and movies. And the nearly impossible task of maintaining a blacklist. And SSL tunnelling....
On a technical level, it just can't be done. Besides, this is not a technical problem. The technology is working the way it's supposed to work. It's a human behavioral problem, and that's how it should be addressed.
A timely example is in today's news;
Iran keeps its Guard upMany sites, including the BBC's popular Farsi service, have been blocked and filtered (often using North American-made software).
...
"I have at least 4,000 visitors to my Web site every day even though my site is blocked and censored heavily. The Iranian students are finding a thousand ways to get past the censors. They're even telling me that they're now building their own antijamming devices,"
