CS Monitor reports:
The software companies involved sell this technology primarily to private companies in the US and abroad. Companies use these tools to keep employees from accessing pornography sites and websites infected with viruses.
Repressive governments also turn to these American systems, not only to filter out porn and viruses, but also to block political, religious, [...]
October 11th 2007 
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A column in The Guardian asks if web filters are just a waste of everyone’s time and money and a 16 year old Australian cracked the countries filtering software. Rather than implement a national firewall-type filtering system Australia makes filtering software available for free hoping that parents will restrict what their children can view online.
Which [...]
August 30th 2007 READ MORE NO COMMENTS
So, I was doing some searching in google and baidu and noticed two sites (that appeared to be the same) voanews.cn and voanews.com.cn. Upon visiting voanews.com.cn I was surprised to find myself end up at google. voanews.com.cn, like voanews.cn should resolve to 218.25.59.214, not google.
The other thing that stood out was that these sites [...]
July 10th 2007 READ MORE 4 COMMENTS
For the most part* the GFW blocks in two ways:
1) IP blocking
2) Keyword in url blocking
IP blocking is pretty easy to spot, traceroute will fail at the backbone level in China, and there will only be outgoing syn packets to the IP, the 3-way tcp handshake will never be established. (Note: all domains hosted on [...]
June 28th 2007 READ MORE NO COMMENTS
Tunisia uses commercial filtering software called SmartFilter , which is produced by the U.S. company Secure Computing, to filter Internet access in Tunisia. This software is configured to blocked pre-defined categories of content – content classified by SmartFilter – including at least four SmartFilter categories: Anonymizers, Nudity, Pornography, and Sexual Materials.
Tunisia’s Internet filtering [...]
April 9th 2007 READ MORE 12 COMMENTS
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