How to Open Blocked Sites – Content Filters and Their Weaknesses Explained

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The new idcloak article – How to Open Blocked Sites – breaks down the different types of content filters and explains the simplest and cheapest ways to circumvent them.

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Unblocking is a little like security in that knowledge of what you are up against is even more important than the technologies in your arsenal.

idcloak Technologies has published an illuminating new article on internet censorship systems, explaining how restricted users may exploit weaknesses in any given filter and access the sites that are blocked.

How to Open Blocked Sites’ is aimed at everyday readers with no prior knowledge on the subject, introducing them to the four major types of content filter systems and explaining how each technology works to keep users off banned web pages.

The toughest and most expensive censorship system is the first to be addressed: stateful packet inspection filtering, which uses deep packet inspection techniques to record activity and uncover unwanted web activity through analysis.

Keyword blocking and IP filtering are then addressed before the article ends on the simplest censorship system, DNS filtering – the use of simple blacklists of website domain names.

Recommendations for how to circumvent each type of filter are given in each section. These range from elite VPN services down to simple techniques like entering an IP address into the browser instead of a web address.

Asked what value there is in educating the user on different filter types, the writer of the article, Robin Welles, was assured, “Unblocking is a little like security in that knowledge of what you are up against is even more important than the technologies in your arsenal. If you try some of the simpler circumvention tricks and they work, you know you are up against a low-grade filter and can save yourself a lot of hassle, and even money.”

The only paid circumvention service suggested is the SSL VPN, a service which idcloak is itself due to launch in a few weeks’ time. Other free services recommended in the article are already available through the idcloak site, such as the website unblocker proxy.

idcloak has published over 700 articles in its Knowledge Center in an effort to equip users with the information they need to keep their internet experience safe, private and free of restrictions.

See idcloak.com to learn more.

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Gill-Chris Welles
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