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Censorship continues to be a big concern for China

A group of computer experts from the University of Cambridge claims that they are now able to circumvent the censorship mechanism that China uses to block unwanted content from reaching its citizens. Certain words are banned and certain websites are also banned. A user sitting within the country's network will not be able to reach websites for which the government has deemed inappropriate. China itself has defended its right to police the Internet for its citizens many times.

The group of researchers say that China's firewall is based on a a series of Cisco routers and the products work by censoring keywords. When a user wishes to access a websites that's banned, the router returns reset packets to the foreign website, severing the connection -- the data transmission is stopped at the foreign end-point. Using this bit of information on how the Cisco routers work, the researchers were able to find their way around the firewall by creating a system that ignores the reset packets sent by the Chinese routers.

Along with their discovery, the researchers also found that it was possible to create a denial-of-service (DoS) attack from within the firewall using the router's own blocking mechanisms. By masquerading the source IP address of a banned website to one that's within China's network, the researchers are able to ban users from within the network from accessing a Chinese government website for example.

Richard Clayton, spokesperson for the laboratory at the university told reporters that the researchers had reported the findings to the Chinese Computer Emergency Response Team.


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RE: cat and mouse
By jtesoro on 7/5/2006 12:41:48 AM , Rating: 2
quote:
Shouldn't you be more concerned about the people making said material, since this is where the welfare of the children is actually being violated?

Agree.
quote:
There wouldn't be so much of it if there weren't an audience for it (child porn).

Agree also.

The approach of addressing both the supply and demand side of the kiddie porn issue is valid. Authorities should find ways of identifying and catching those who produce and distribute it. At the same time they can also make it difficult to get kiddie porn in the first place. What to do with the viewers themselves, I'm not sure. But some combination of punishment, education and medical treatment might work.


"This is about the Internet.  Everything on the Internet is encrypted. This is not a BlackBerry-only issue. If they can't deal with the Internet, they should shut it off." -- RIM co-CEO Michael Lazaridis

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