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Web Content Filtering

uses DansGuardian* as its web content filter and is an OpenSource package which currently runs on a range of operating system platforms including Linux, FreeBSD, OpenBSD and Solaris and integrates with ipFireGuard+ to provide a true highly configurable web content filter.

It is designed to be completely flexible and allows you to tailor the filtering to your exact needs. It can be as draconian or as unobstructive as you feel is appropriate to your company's policies. The default settings are geared towards what a primay school might want, to provide complete secure browsing but you control what you want to block.

What is 'Content Filtering'?
Many web filters have very large database lists of bad sites maintained by third parties. If you try to go to these sites you will get blocked. ie your web access is filtered by web address. In this scenario the sites blocked are only as up-to-date as the database being used.

The web is a fast changing place and even large web search engines such as Google or Altavista or Yahoo don't even know the half of it.

This makes filtering by web address (URL) alone difficult as sites change and new ones come up all the time. It is impossible to have comprehensive filtering using just URLs.

What is needed is something to check every page you (or your staff) ever access for 'bad' subjects such as drugs, profanities, hate, pornography, etc, and disallow it if it's not deemed suitable or in contravention of company policy. This is called 'Content Filtering'.

What it does!
It filters the actual content of pages based on many methods including phrase matching, PICS filtering and URL filtering. It does not purely filter based on a banned list of sites like other filters.

It filters using multiple methods. These methods include:-

  • URL and domain filtering
  • content phrase filtering
  • PICS filtering
  • MIME filtering
  • file extension filtering
  • POST limiting

The content phrase filtering will check for pages that contain profanities and phrases often associated with pornography and other undesirable content. The POST filtering allows you to block or limit web upload. The URL and domain filtering is able to handle huge lists and is significantly faster than other commercially available products.
The filtering has configurable domain, user and source ip exception lists. SSL Tunneling is supported.

ipFireGuard+ puts you in control of the web content coming in to your company.

The configurable logging produces a log in an easy to read format which has the option to only log the text-based pages, thus significantly reducing redundant information such as every image on a page.

Pretty much all parts of ipFireGuard+ are configurable thus giving the end administrator user total control over what is filtered and not some third-party company.

* ipCop & DansGuardian used in ipFireGuard & ipFireGuard+ are distributed under the GNU/Linux General Public License.
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Web Content Filtering
- What is it?
- What it does!
- Features
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