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[liberationtech] Images of Blocking in Different Countries?

Eric S Johnson crates at
Wed Aug 15 15:02:10 PDT 2012

> > I.e. it's easy to register a new domain (call it

> > and put up onto it a handful of pages


> The first is that DPI could be occurring at border routers, so that

> traffic within China is not undergoing DPI scanning by default. If your

> hypothetical is hosted in China you might

> see different behaviour to if it were hosted in, say, the US.


I'm talking about hosting it outside CN.


Some research has shown that the filtering is not only on the borders, but I don't think that's of great consequence. By far, the major ways China controls what its netizens see online is

1)      requiring companies which host content domestically (sites such as those serving media; SNSs; and (micro)blogging platforms) to maintain a high level of vigilance to take down disapproved content when it’s created, and

2)      the Great Firewall, which prevents access to disapproved content from abroad.


> the UK with BT's Cleanfeed. In that case, certain domains are added to a

> watch list, and only those domains are subjected to more sophisticated

> forms of filtering.  This means that the filter doesn't have to expend

> the resources on DPI for all web traffic, only those that have been

> marked up on the list of problematic domains.


That’s interesting. Haven’t seen that in CN, but it might be hard to detect—it might require someone to “stumble” upon it.




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