Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
Censorship China Communications Encryption Networking Privacy Your Rights Online

Swedish Researchers Expose China's Tor-Blocking Tricks 73

An anonymous reader writes "A pair of researchers at Karlstad University have been able to establish how the Great Firewall of China sets about blocking unpublished Tor bridges. The GFC inspects web traffic looking for potential bridges and then attempts 'to speak Tor' to the hosts. If they reply, they're deemed to be Tor bridges and blocked. While this looks like another example of the cat and mouse game between those wishing to surf the net anonymously and a government intent on curtailing online freedoms, the researchers suggest ways that the latest blocking techniques may be defeated."
This discussion has been archived. No new comments can be posted.

Swedish Researchers Expose China's Tor-Blocking Tricks

Comments Filter:
  • by Anonymous Coward on Tuesday April 03, 2012 @11:50AM (#39561003)

    The throughput is reasonable, but the latency is pretty high.

  • by girlintraining ( 1395911 ) on Tuesday April 03, 2012 @12:04PM (#39561167)

    And yet another awkward summary graces the Slashdot homepage, in the grand tradition.

    And yet another grammar troll graces the comments, also in the grand tradition. I know this may be hard to accept but the human mind can parse language that's full of errors, paradox, contradictions, and incomplete information; And does so often. As well, linguistic rules and content both can be mutated without warning based on prior communication, current context, or implication.

    Now I can understand how a certain subset of the population could have an issue with this -- they were never invited to 'those' kind of parties, have never enjoyed an interpersonal relationship with another person or group where in-jokes and contextual language created a stronger bond between them, or ever flirted with someone using innuendo so skillfully that anyone observing mid-conversation would be unable to tell any kind of flirting was going on -- a sort of sexual encryption if you will. To those poor, poor bastards (like the OP), such linguistic acrobatics would be yet another reminder that they're missing out on something.

    For that subset of the population, any departure of language from the perfectly ordered and rigidly rule-bound statements would be threatening: It would be just another social nuance beyond their grasp. Another way in which those otherwise average, stupid, mouth breathers are better than them, because they don't get tripped up on details like whether a comma at the end of a statement should go inside or outside a direct quotation. For most of us language is just a tool, organically evolved, and generally not worth paying much attention to -- as long as the point gets across it's "yay! language! woo."

  • by Mattygfunk1 ( 596840 ) * on Tuesday April 03, 2012 @12:07PM (#39561195)
    The important part is that the information gets through.

    Unfortunately spreading pro-freedom propaganda will get you sent to jail once you try to disseminate it further.

    Revolution in China is inevitable (IMHO). Attempting to improve the current status technologically is a noble cause, by those who are free, for those who aren't.

  • by Bromskloss ( 750445 ) <auxiliary.addres ... y@ g m a i l.com> on Tuesday April 03, 2012 @12:24PM (#39561381)

    or ever flirted with someone using innuendo so skillfully that anyone observing mid-conversation would be unable to tell any kind of flirting was going on

    Breaking one of the rules of grammar, say, by using while the way the Slashdot summary does, might be the means by which one conveys precisely that innuendo. If the speaker overall cares very little about the rules, I'm afraid no one would perceive their intentions as that subtle signal would be drowned in the flood of noise.

  • by Max_W ( 812974 ) on Tuesday April 03, 2012 @12:51PM (#39561711)
    Millions of Chinese tourists travel abroad each year. On a tiny SDHC camera card of 256 GB one can bring several movies in HD quality, plus about all texts of the humanity.

    What is the point of this expensive firewall? The "iron curtain" is just not possible with the flash memory cards of high capacity. Any intelligent curious person can bring for himself a library to last for years.
  • by Hatta ( 162192 ) on Tuesday April 03, 2012 @02:25PM (#39562877) Journal

    If you have to wait for a compatriot to leave the country and return before you get uncensored news you'll miss the protests going on downtown. The point of the firewall is to prevent an Arab Spring from occuring in China.

"I prefer the blunted cudgels of the followers of the Serpent God." -- Sean Doran the Younger