by the BBC
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?
http://news.bbc.co.uk/2/hi/programmes/click_online/8872320.stm
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