Resources for “Add Web Porn Filtering and Other Content Filtering to Linux Desktops”

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DansGuardian “Flow of Events”: dansguardian.org/?page=dgflow

DansGuardian Download Page: dansguardian.org/?page=download

Tinyproxy Download Page: tinyproxy.sourceforge.net

DansGuardian Documentation: www.vollmar.ch/dansguardian-e.html

Using FireHol: www.pilpi.net/journal/item-985.php

“HOWTO Lockdown Mozilla Preferences for LTSP” by Warren Togami: togami.com/~warren/guides/mozlockdown

DansGuardian Extras Link: dansguardian.org/?page=extras

URLblacklist.com: urlblacklist.com

Web Content Filtering Portal: www.harvest.com.br/asp/afn/dg.nsf

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firefox settings for pickup cfg file

Manfred's picture

Hi,
Nice article!

I have a non-preloaded firefox 1.0.7 on my distribution (slack).
I had to change/augment the greprefs/all.js file
pref("general.config.obscure_value", 0); //was 13 ; changed pref("general.config.filename", "firefox.cfg"); //Added
otherwise the firefox.cfg file would not be read.

Manfred.

Using iptables

Darryl Scroggins's picture

I wanted a filtering system that would not be easy to defeat and I did not want the solution to depend on one machine being on all the time.

I ended up running dansguardian, squid, and iptables on each machine, using iptables to forces the browser to use the squid proxy at 8080.

The following line, added to the end of /etc/rc.d/rc.local, does the trick:
iptables -A OUTPUT -p tcp --dport 80 -m owner ! --uid-owner squid -j REJECT --reject-with tcp-reset

This configuration has served me well for over a year.

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