How governments have tried to block Tor [28C3]

How governments have tried to block Tor

Iran blocked Tor handshakes using Deep Packet Inspection (DPI) in January 2011 and September 2011. Bluecoat tested out a Tor handshake filter in Syria in June 2011. China has been harvesting and blocking IP addresses for both public Tor relays and private Tor bridges for years.

Roger Dingledine and Jacob Appelbaum will talk about how exactly these governments are doing the blocking, both in terms of what signatures they filter in Tor (and how we've gotten around the blocking in each case), and what technologies they use to deploy the filters -- including the use of Western technology to operate the surveillance and censorship infrastructure in Tunisia (Smartfilter), Syria (Bluecoat), and other countries. We'll cover what we've learned about the mindset of the censor operators (who in many cases don't want to block Tor because they use it!), and how we can measure and track the wide-scale censorship in these countries. Last, we'll explain Tor's development plans to get ahead of the address harvesting and handshake DPI arms races.

Speaker: Jacob Appelbaum, Roger Dingledine
EventID: 4800
Event: 28th Chaos Communication Congress (28C3) by the Chaos Computer Club [CCC]
Location: Berlin Congress Center [bcc]; Alexanderstr. 11; 10178 Berlin; Germany
Language: english
Start: 28.12.2011 18:30:00 +01:00
License: CC-by-nc-sa

• Category

  Education

[ScrubTutor]

Let me tell you something, Mr. First Day on the Internet, you go on 4chan, you're gonna find people saying "nigger". You go on the Silk Road, you're going to find drugs. You go on the Hidden Wiki, you're going to find child porn. The existence of the Silk Road and the Hidden Wiki do not invalidate the claim that the deepnet is not incredibly valuable.

And seriously, if you're on the hidden wiki, and you find cp, it wasn't an accident.

[helltrackrider]

Fuck man...wish i was a geek.

These two dudes are the modern day Chuck Norris and John Wayne.

[BabuBlaze]

well tht propaganda agenda is total bullshit lol. And no im not a total shithole...wat! -Dude I simply said he mightve found it by accident through a forum on tor. You said you were on the internet for 20 years -uhh are you talking about on tor? The deep web or just the regular internet. Theres a difference...lol.

[dude747wtf]

I've been on the Internet for 20 (yes, twenty!) years, and thankfully I've never found cp. So my guess is you're a total sh*thole or you're just trying to pass some propaganda agenda. Neither of the too look any good...

[Darren Scicluna]

Nice

[LLiimmzz]

I've just downloaded tor and i don't know what the fuck to do with it, any good sites i should visit??? NO GAY SHIT please or anything related

[rocmisok]

The value of a network such as Tor that does not interfere with the everyday traffic of the populace is too invaluable to dismantle.

[Gregory Wood]

It never ceases to amaze me how afraid people are of freedom and how "revolutionary" and contraversial people are who strive to protect our freedoms. Even in tne United States, where basic freedoms have been codified in the Bill of Rights since 1791, many citizens and government officials are more likely to view advocates for freedom with suspicion and in some cases scorn rather than respect and admiration.

[KommenKata]

It's not very difficult.

[BabuBlaze]

well he never said his friend was on hiddenwiki...for all you know he could've been on a discussion forum or image board with misleading text and information, clicking it expecting one thing but instead finding cp. But hey i sure as hell don't know which of the two was picked, or maybe neither one, but what I do know is his friend found cp...lol.