Unfortunately the performance of DansGuardian/Squid when first .. for rebuilding DansGuardian, see question Usage#11c in the Wiki FAQ. DansGuardian is an award winning Open Source web content filter which currently runs on Linux, FreeBSD, OpenBSD, NetBSD, Mac OS X. DansGuardian is an award winning Open Source web content filter which DansGuardian is excellent at filtering pages from the Internet as it . Content is available under GNU Free Documentation License or later.

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Some implementations of some RAID options are very fast, and these can sometimes be helpful. This works by default with the Internet Explorer IE browser, and can also be made to work with the Firefox browser.

This limitation is understandable. DansGuardian can easily be configured to have multiple filter configurations to provide varying degrees of web filtering to different groups of users. Overview interfaces, features, and technology. Even after skipping is prevented, an end user may still be able to connect right through DansGuardian to an external proxy site and hop onward to a restricted site, or to avoid web ports completely with some anonymizer tools.

The original documentation is found here: If possible put the Squid cache on a different disk than the rest of the system. To make a memory measurement, let at least ten minutes elapse after the filter starts, and arrange for some non-trivial system load. The comments in the file explain how to enable the various options. Bug reports and pull requests are welcome on GitHub at https: This problem may also affect several of the recommended solutions below.

By sending each DNS query over your ISP connection only the first time, a local caching DNS service will considerably improve performanceboth by freeing up a great deal of ISP bandwidth for more web content and by responding much more quickly to most requests since responses can come out of the local cache without ever entering the cloud. Use an add-on for Mozilla and Firefox that remembers and automatically supplies usernames and passwords, such as the Magic Password Generator.

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Once downloading of a blacklist subscription works reliably for you, it should most likely be scheduled to run automatically in the future.

For example it may be prudent to figure out which categories are similar even though they may have different names. The accessor methods available include:. Such constructs are never necessary; there’s always a way to construct a better regular expression that does the same docuumentation but without exacting the exponential performance penalty. This is a well known behavior; it does not indicate either that you’re hallucinating or that you need a different tool.

So long as the helper says it’s okay, Squid will accept it, and DansGuardian will accept it too. This document attempts to answer the question: Note this convenience is wildly insecure. Occasionally user configuration causes Regular Expressions to be used much more heavily.

Blacklists that specifically block proxies.

Products that include DansGuardian. The adjunct program that transforms information from your authentication system into DansGuardian is pretty simple. IP address ranges or subnet masks are only supported in release 2. In the interest of simplicity, our example here will just use one level.

Using multiple blacklists requires a little attention the first time to set it up, but then it documentatipn all by itself.

Include line for that category. Shalla also has subcategories. When this happens you can dive into the inner workings of DansGuardian to tweak how the term weighting is being applied, or you can just explicitly block or allow a partiular web page or even an entire domain.

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On dansgguardian other hand it’s significantly less secure than NTLM and should only be used with caution if you’re worried about internal crackers.

Dansguardian Internet Content Filtering

It’s not documenhation either that this patch is applicable to the 2. Contributing Bug reports and pull requests are welcome on GitHub at https: There are several ways you can fake DansGuardian authentication for them anyway: This reverse name translation happens in real time as sites are accessed, rather than as a batch operation later when the log is being analyzed. This is where you can force an entire web site to be blocked. In other words in many cases DansGuardian looks for and uses the information, but does not actually initiate its capture or modify the exchange between the browser and the local proxy.

Dansguardian-panel – SME Server

One of its side effects will be to prevent skipping around, so there still won’t be any problem. Such constructs are never necessary, and prevent many internal optimizations.

Sometimes a web site may get blocked when it shouldn’t have been, other times something might slip through that should have been docuumentation. There was a patch to version 2. DansGuardian relies on a variety of methods to determine if a page should be blocked based on your needs: Don’t worry that this amount of memory seems more typical for some other OSs like Windows Vista rather than for Linux.

The maxagechildren parameter seldom has any significant impact on performance. Please contribute if you’d like more formats supported. You can docujentation save and close the file.