[K12OSN] web filtering with SquidGuard

Mike Ely mely at rogueriver.k12.or.us
Mon Feb 6 20:54:40 UTC 2006

RiE wrote:
> Here's what I have:
> (nph-proxy.[cgi|pl])
> (nph-proxya.[cgi|pl])
> (nph-proxyb.[cgi|pl])
> (nph-surf.[cgi|pl])
> (nph-one.[cgi|pl])
> (nph-teste.[cgi|pl])
> I think I did it this way so if someone had a legit script called
> nph-something.pl, it wouldn't be blocked.
> I have not had any false positives reported with this list.

Thanks for that - I've been trying to figure out how to block nph proxy 
for a while now, and none of my ugly hacks at regex worked.

One of the primary places I was finding the students were going to is 
www.proxy.org - it's sort of a clearinghouse for the open proxy sites. 
Once that's blocked, they'll have to google or otherwise search around. 
  I found that leaving that site open, and then actually catching the 
kids in the act of bypassing the filter had an immediate and notable 
effect on behavior.  Here's my trick for that:
tail -f /var/log/squid/access.log | grep proxy


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