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General Chat Thread, Proxy site for blocking in General; we use surf control here and seems to do an excellent job of keeping the little darlings off anything you ...
  1. #16
    krisd32's Avatar
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    Re: Proxy site for blocking

    we use surf control here and seems to do an excellent job of keeping the little darlings off anything you don't want them on!

    i'm pretty sure by the logs it creates that it does do content filtering but i'm not 100% sure!

    Kris

  2. #17


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    Re: Proxy site for blocking

    @baronne - the words "content filter" are often used to describe simple URL filters, largely because they are preventing you from seeing certain content.

    True content filtering is much more effective. Most (all?) solutions still use a URL database in addition to content analysis, but the difference is they pick apart the downloaded content, and work out blocking based on html, page content and URL parameters. This allows effective, URL agnostic blocking of certain types of content, including proxy sites.

    SmoothWall's "guardian" range are true content filters, as is Dansguardian. If you would like to know more about SmoothWall, either visit our website, or give me a call - url/phone number in my sig..

    Tom

  3. #18

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    Re: Proxy site for blocking

    good... yeah I'll definately keep you in mind when we next review SmartFilter.... I think we bought a few years' subscription, so we might hang on to that for a few years yet...

  4. #19
    mark's Avatar
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    Re: Proxy site for blocking

    Our filtering is done corporately baronne - hence the big boys version of 'guardian.

    Smartfilter had no plans to move to content filtering, and DansGuardian was very good value for the money, and also offered us a very generous deal.

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    Re: Proxy site for blocking

    Until recently we were just using Smartfilter, until I learned about Censornet through this board. I still run the Smartfilter on a parent proxy, with the Censornet as a bridge. Best of both worlds. On its own the Smartfilter is easily bypassed. Pupils here were uploading cgi proxies to personal webspace. Smartfilter wouldn't categorise those addresses in a million years.

    Yay for Edugeek and Censornet!

  6. #21

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    Re: Proxy site for blocking

    Ok, so I'm starting to see a bunch of filter systems mentioned here, so we've got (correct me if I'm wrong and throw in suggestions here):

    DansGuardian - free, open source content filter, runs on Linux
    SmoothWall - DansGuardian on steroids, runs on Linux and has added features such as Active Directory authentication
    Censornet - free, open source product with commercial offerings (appliance, etc.)
    SmartFilter - commercial URL filter
    SurfControl - commercial URL filter?

    I feel a survey coming on here....

    cheers
    baronne

  7. #22

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    Re: Proxy site for blocking

    I'm finding our pupils are accessing sites by browsing to sites with odd URLs such as http://w.bebo or http://humpty-dump.bebo

    baronne

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    Re: Proxy site for blocking

    Quote Originally Posted by baronne
    I'm finding our pupils are accessing sites by browsing to sites with odd URLs such as http://w.bebo or http://humpty-dump.bebo
    baronne
    I'll say it now to save Geoff the bother. If you use a content filter then it doesn't matter about the URL because you block based on what's on the actual web page.

  9. #24

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    Re: Proxy site for blocking

    Thanks NetworkGeezer.

    Dansguardian will do AD authentication providing you use one of the new releases (requires you compile it) and you have squid setup correctly to do NTLM authentication.

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    Re: Proxy site for blocking

    which products are best to use on a Windows network... these all seem like Linux solutions. I see DansGuardian and SmoothWall are connected, is SmoothWall based on DansGuardian? What's the connection?

    cheers
    Baronne

  11. #26


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    Re: Proxy site for blocking

    baronne,
    SmoothWall is based on DansGuardain - The Dan in DG is Daniel Barron, our technical Director, and bloke of much long hair & sandals.

    DG works great (ask Geoff), but configuring it and maintaining it is not for the faint of heart - requires you to be at least something of a linux guru. SmoothWall's commercial filters are there for the ease-of-use crowd. Basically, they offer all the power of DG, but with:
    Web interface - NO linux knowledge req'd for a
    Very simple install - one CD, couple of questions, done in 15 mins
    Integrated groups/auth
    web-based reporting tool
    delegated admin - allow non-techs to add/remove sites, view reports
    works with windows & mac
    support contracts and installation if you require
    etc.

    As opposed to some of the others, SmoothWall turns a server into an appliance. Other filters (surfcontrol, for example) sit on top of ISA, and still others come shipped as an appliance (involves paying for a shiny box you could have had cheaper from HP, IBM or Dell).

    If you have any specific questions, do ring/pm/email me!

    Tom

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    Re: Proxy site for blocking

    ahh coool... all clear now...
    cheers
    Baronne

  13. #28
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    Re: Proxy site for blocking

    All the ones listed on this thread are already bocked here, one I found yesterday though isn't:

    www.blockednomore.com

  14. #29


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    Re: Proxy site for blocking

    @forgetful - not in our blocklist (yet) but caught by the content filter.

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    Re: Proxy site for blocking

    SmartFilter had it already.... sweet.

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