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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>G’day,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Funny to see iiNet on that list – since they have been so
vocally critical of the latest filtering proposals.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I actually ran an ISP throughout in the 90s, and offered a “family
friendly” service as well as a school service that eventually serviced a couple
of hundred schools over the state govt VicOne network.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The domestic grade service simply offered web access through a
proxy server with an ‘N2H2’ filter engine behind it. The school service was
pretty much the same. The default arrangement was that they opened port 80 at
the school gateway, and we ran it all through a transparent proxy with n2h2
behind it. If the school wanted to, they could open additional ports as well
(some of them wanted their own mail servers etc) then it was entirely up to
them to manage the consequences of that. If I’m not mistaken, most school
services work pretty much the same. Some of them offer additional bells and
whistles (like ours had individual user authentication and download limits
etc) but they were usually implemented through a proxy of some kind. Very few
offered lower level controls (e.g <a href="http://www.webtraf.com.au">www.webtraf.com.au</a>)
which use layer 7 filtering and so are way more effective at controlling
traffic, but hugely resource intensive.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The only viable way to implement those sort of filtering
technologies is in a widely distributed way (as in one filter engine at each
site) – further upstream, at the isp or (foolishness) at a national level would
require way too much processing power and/or bring throughput down to a crawl.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers!<o:p></o:p></span></p>
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<h3>IIA 'Family Friendly' ISPs <o:p></o:p></h3>
<p><a href="http://www.austar.com.au/">AUSTAR broadband</a> <br>
<a href="http://www.gday.net.au/">Gday.net</a> <br>
<a href="http://www.iinet.net.au/">iiNet</a> <br>
<a href="http://www.optus.com.au/home/index.html">Optus</a> <br>
<a href="http://www.qldits.com/">Queensland IT Services</a> <br>
<a href="http://www.soulaustralia.com.au/">Soul Communications</a><br>
<a href="http://www.bigpond.com/homepage/">Telstra BigPond </a><br>
<a href="http://uqconnect.net/">UQConnect </a><br>
<a href="http://www.virginbroadband.com.au/">Virgin Broadband </a><br>
<a href="http://www.webcentral.com.au/">WebCentral </a><br>
<a href="http://www.webshield.net.au/">Webshield</a> <br>
<a href="http://www.westnet.com.au/">Westnet </a><br>
<a href="http://wideband.net.au/">Wideband Networks</a><span style='color:#1F497D'><o:p></o:p></span></p>
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