[K12OSN] Filtering OTIssue 54

[Jeffrey Myers]

I am trying to configure a squid proxy and a transparent proxy and I am
having issues.  I am using K12LTSP 5.0.  I am trying to proxy all terminal
clients that connect to the LTSP server but I am having problems.  Has
anyone configured this successfully?  If so do you have any advice or
instructions that could help me out?  This is a new subject to me.  A lot of
the instructions out there are for previous versions of K12ltsp and I can
not get them to work.  I have tried using a squid and squidguard combination
and a Squid and Dansguardian configuration.  I am hitting a wall on the
transparent proxy feature that come preloaded on K12LTSP 5.0 and the
transparent proxy feature -dansGuardian as well.  Any advice, instructions
or conf files would be greatly appreciated.     

-----Original Message-----
From: Burroughs, Henry [mailto:HBurroughs at HHPREP.ORG] 
Sent: Wednesday, March 28, 2007 1:08 PM
To: k12osn at redhat.com
Subject: Re: [K12OSN] Filtering OTIssue 54

Setup squid and SquidGuard.  I'm running that right now, and that site is
already covered in the blacklist files.  Now, you have to enable which
blacklists you are going to use (ie: hacking, drugs, proxy...) and then
squid/squidGuard does the rest.  I am also doing a transparent proxy.

Henry Burroughs
Technology Director
Hilton Head Preparatory School
www.hhprep.org


Message: 21
Date: Wed, 28 Mar 2007 08:26:11 -0700
From: Roger <roger.in.eugene at gmail.com>
Subject: Re: [K12OSN] Filtering OT
To: "Support list for open source software in schools."
	<k12osn at redhat.com>
Message-ID:
	<69b790a80703280826y4dd07609h46bab16e722b0388 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 3/27/07, Mel Wade <mel at melwade.com> wrote:
> I'm looking for a way to successfully block https://www.proxify.com   Any
> ideas?
>

Good luck.
here are more you should block:
thevenue.net/anon/nph-proxy.cgi
atunnel.com
btunnel.com
...
ztunnel.com
heck, probaby *tunnel.com


If you're using squid, try looking through the log files.  Look for
'proxy' 'tunnel' 'anonymous' for sites the students get to.
What about 'legit' sites, take a look at:
http://www.AllAboutAbe.com/
click on the 'abe' pic in the upper left.
there are literally thousands of sites out there for bypassing proxy
servers.  Every once in a while, I'll browse the logs and add a dozen
to the list of sites being blocked.
That first one with nph-proxy.cgi, if you google that, there's a site
where that software is being distributed.  Quite a few people use the
default names, so blockin nph-proxy.cgi in the URL would cover all of
those.  There's one site, oregonlive.com that for some reason uses
that software.



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End of K12OSN Digest, Vol 37, Issue 54
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