Internet Filtering in China in 2004 2005 

Internet Filtering in China in 2004 2005 

1. Executive Summary......................................................................................................................................... 3 

2. Political, Technical, and Legal Context in China........................................................................................... 4 

A. Sensitive / Controversial Topics for Media Coverage .............................................................................. 4 

B. Internet Infrastructure and Access ............................................................................................................5 

C. Legal Background....................................................................................................................................... 8 

D. User Rights and Protections ....................................................................................................................18 

3. Testing Methodology .....................................................................................................................................19 

A. Methods .....................................................................................................................................................19 

B. Results Analysis ....................................................................................................................................... 20 

C. Methods Specific to China ........................................................................................................................21 

E. Topics Tested............................................................................................................................................ 23 

4. Results and Analysis ..................................................................................................................................... 23 

A. Summary .................................................................................................................................................. 23 

B. Proxy Testing Results .............................................................................................................................. 24 

C. In State Testing Results............................................................................................................................27 

D. Overblocking ............................................................................................................................................ 42 

E. Mechanics of China's Filtering ................................................................................................................ 45 

F. E mail Filtering ........................................................................................................................................ 46 

G. Blog Filtering Testing ...............................................................................................................................47 

H. Google Cache Testing .............................................................................................................................. 48 

I. Filtering by Chinese Search Engines Baidu and Yisou ........................................................................... 49 

J. Restrictions on University On Line Bulletin Board Systems ................................................................. 50 

K. Restrictions on On Line Discussion Forums ..........................................................................................51 

5. Conclusion ..................................................................................................................................................... 52 

Appendix 1 ......................................................................................................................................................... 53 

Appendix 2 ........................................................................................................................................................ 54 

Appendix 3..........................................................................................................................................................55 

Appendix 4 ........................................................................................................................................................ 58 

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