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[liberationtech] Images of Blocking in Different Countries?

Eric S Johnson crates at oneotaslopes.org
Wed Aug 15 12:04:04 PDT 2012


Yes-they stopped doin packet inspection in about 2008, near as I can tell.

 

Best,

Eric

 <http://keyserver.pgp.com/vkd/DownloadKey.event?keyid=0xE0F58E0F1AF7E6F2>
PGP

 

From: Steve Weis [mailto:steveweis at gmail.com] 
Sent: Thursday, 16 August 2012 00:56
To: Eric S Johnson
Cc: Stanford tech list
Subject: Re: [liberationtech] Images of Blocking in Different Countries?

 

This paper "Ignoring the Great Firewall of China" is a few years old, but at
the time China was inspecting TCP packets for verboten keywords:

http://www.cl.cam.ac.uk/~rnc1/ignoring.pdf

The blocking was easy to circumvent. The researchers were able to just
ignore TCP reset packets and the connections proceeded unhindered. They also
were able to conduct a denial of service attack against IP addresses in
China by spoofing packets with forbidden content, which would trigger
spurious connection resets.

 

This was 6 years ago, so I'm sure the game has changed somewhat. 

 

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