For free solutions.

Dansguardian ~ very powerful and customizable but not the simplest to configure.

Clarkconnect ~ It is a nicer interface to danscuardian but still requires technical knowlege to manage.  I believe this also adds full firewall and router support.

Untangle ~ Easy to configure, easy to set up.  This is a full firewall, router, content filter replacement in an very easy to use interface.   The reporting is lacking and I am still waiting on separate filters based on AD groups (Active Directory integration is only available on the paid version). 

OpenDNS.  This is an external content filter.   The concept is great, you just change your DNS Fowarders to them and you got filtering.   While you do get to choose the categories, and manage the black and white lists, this is all or nothing with no user level reporting.  This is a great solution if you want to just be compliant and stop the accidental hits.   There is also no override for them that I know of yet. They do now offer a paid version which looks like it will make them a very complete solution.

When parents ask me what to use at home I usually recommend: K9WebProtection:

This goes against my roots but we paid for Lightspeed at MSJ. I choose them because they offered both Antivirus and advanced content filtering for what it would cost me to just run Antivirus. 

Bjorn Behrendt
IT Coordinator
Mount St. Joseph
[log in to unmask]
(802) 775-0151

On Fri, Feb 5, 2010 at 8:57 AM, Bill Clark <[log in to unmask]> wrote:

How much of a Linux “guru” do you need to be to run DansGuardian ? I don’t want to switch to what looks like a good filtering system if I cannot properly maintain it.


We pay for our filtering service through Sonicwall. Sometimes it paints with a broad brush, but I do like the leywords feature, and it is pretty easy to manage.


Bill Clark

Austine School


From: School Information Technology Discussion [mailto:[log in to unmask]] On Behalf Of Craig Lyndes
Sent: Friday, February 05, 2010 7:03 AM
To: [log in to unmask]
Subject: Re: Web Filtering



At St Albans City School we use filtering to try to keep kids from accidentally stumbling across inappropriate web sites.  We also filter using free resources.  We have Dans Guardian running on CentOS.  This is set to scan web pages, the Naughtiness number is set to 100.  As a reference, 50 would be for real little kids, 160 for high school.  We also use OpenDns which has categories and an well maintained list of sites.  We have "the usual suspects" blocked there.  We have myspace and facebook blacklisted along with several proxy sites we caught the kids using.   In looking at our logs I feel like we have successfully chosen our battlefield, it is facebook, that is what the kids are trying to access, not porn or other less savory stuff.  We also have you tube and most other web 2.0 sites open.  Very teacher friendly filtering.  Supervision is our primary tool for controlling what kids do on the Internet.

Craig Lyndes

On 2/4/2010 10:42 AM, Steve Walker wrote:

Ok, this topic has been discussed several times, and then discussed again, so I really don’t want to get into a large debate or discussion about Internet filtering again, but as far as I know nobody has ever asked the question: What exactly does everyone do for filtering? 


Here at South Burlington, we’re currently working through the process of deciding on whether or not to reduce our Internet filtering to the minimal levels required by CIPA and opening up our filters.  As you can imagine, there are lots of opinions and cases for reducing the filtering level, or keeping the level of filtering high (and several other options in between).


I was asked the other morning what other schools are doing.  I could only answer anecdotally.  It would be helpful to us (and I suspect to others as well) if people wouldn’t mind taking a moment to briefly share what you’re doing at your school.  In an effort to be respectful of everyone’s time, and to keep the subject focused on facts versus opinion, I’ve made a list of several common (albeit generic) choices which you can use to expedite the process.  If you really feel the need to share more information, or the choices provided just don’t work for you, the last option is for you.


Please respond to the list, so everyone can share in the information exchange.


We have a high level of filtering in place (extensive blacklist subscriptions, additional extensive blacklist entries maintained by the school, aggressive weighted phrasing scores, blocking pictures & ads, etc.)

We have a medium level of filtering in place (blacklist subscriptions, or preconfigured hardware appliances, etc.)

We have a minimum level of filtering in place (minimum blacklists, little to no weighted phrasing scores, or the least amount of filtering we interrupt we need to meet CIPA requirements)

No filtering in place at all

Other (something entirely different, or a combination of the above, etc.)  Please take a moment to briefly share what you’re doing.


Currently here at SB, I’d say we’re currently somewhere in between options A and B.


Thanks for your time!


Steve Walker

Information Technology Director

South Burlington School District

550 Dorset Street

South Burlington, VT 05403




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