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Page last updated at 14:55 GMT, Friday, 30 July 2010 15:55 UK

Surfing under the radar to access restricted content online


We are constantly being told there are no barriers to communication with the internet - but in practice that is not strictly true. Companies and even countries try to fence in and block out traffic for a variety of reasons.

But people have been developing ways around these geographic controls - using proxy servers, and VPNs, virtual private networks.

How are the content providers responding to the challenge of virtual private networks?


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