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garvani
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  #267975 29-Oct-2009 09:37
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going back to opendns, this works well for a cheap solution, the only negative thing about it is the latency it introduces to browsing the web, its not as fast as using xtras dns servers.  I have set this up at a school boarding hostel, locked the dns servers to open dns's servers in kerio winroute (their proxy server), and then configured opendns to block access to proxy sites, porn, etc etc. It works well and so far in the year its been running no one has bypassed it.
Ive also added opendns.org to the routers url block list, so instead of an opendns block message they get a generic block from the router, thus not giving away how they are being blocked.

Ragnor
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  #267983 29-Oct-2009 10:03
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How would you know if someone bypassed it if the proxy site wasn't on opendns's block list?

 
 
 
 


friedCrumpet
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  #267994 29-Oct-2009 10:36
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Technical solutions to social problems are always doomed to fail.

Not to mention every piece of web filter software I've been subjected to has sucked horribly and degraded the overall browsing experience, and is always easily bypassed.

garvani
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  #268005 29-Oct-2009 10:50
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Well it is quite easy in my case, the students are there own worst enemy.. All decent proxy servers have a top10 websites visited etc, and if the students find a proxy that is bypassed you can gaurantee it will be in this list, so a quick trip to opendns, submit that site, and its blocked.. I havnt had to do this very often, as the database at opendns is HUGE..

jaymz
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  #268006 29-Oct-2009 10:51
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Ragnor: How would you know if someone bypassed it if the proxy site wasn't on opendns's block list?


WebMarshal has a reporting tool built in which can generate reports for all sorts of things, which users have been to which sites, largest downloads, browsing time etc

garvani
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  #268017 29-Oct-2009 11:12
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jaymz:
Ragnor: How would you know if someone bypassed it if the proxy site wasn't on opendns's block list?


WebMarshal has a reporting tool built in which can generate reports for all sorts of things, which users have been to which sites, largest downloads, browsing time etc


As does kerio winroute, quite a nice peice of software! shame about the price of it though

browned
636 posts

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  #269271 2-Nov-2009 13:57
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http://www.m86security.com/kb/article.aspx?id=12189&query=script

Webmarshal 6.5 should automatically block proxies if TRACEnet is being used.




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