Cross the Great Firewall of China
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an introduction of Great Firewall of China
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Cross the Great Firewall of China
- 1. Cross the Great FireWall of China Bin Cai bc2e10@ecs.soton.ac.uk
- 2. Introduction
- 3. Beautiful World of Internet http://www.appappeal.com/web-2-0-application-world-mosaic/
- 4. Great FireWall • Great Wall, most famous attraction in China; • operated by the Ministry of Public Security; • start in 1998; • block websites which government don’t want people to access.
- 12. Methods
- 13. Methods used to block website • IP blocking; • DNS filtering and redirection; • URL filtering; • Package filtering; • Connection reset.
- 14. Bypass
- 15. How to bypass GFW • Proxy server located outside of China; • Auto-proxy software and onion routing, such as FreeGate; • APIs; • SSH tunnel; • VPN.
- 16. Conclusion
- 17. Conclusion • China has strict regulations on the Internet; • We always have a way; • Desire for freedom is irresistible.
- 18. Reference • Ignoring the Great Firewall of China, Richard Clayton, Steven J. Murdoch, and Robert N. M. Watson, Computer Laboratory, University of Cambridge, accessed 17 September 2011
- 19. Q &A
Hinweis der Redaktion
- Good morning, everyone! My name is Bin Cai. My topic of today’s presentation is Cross the Great FireWall of China.\n
- Let’s start from the introduction.\n
- Look at this beautiful world map of web applications. Can you imagine how your life will be without these websites? No facebook, no Youtube, no twitter, even no google! But in mainland China, it really happens because of GFW, which is the abbreviation of Great FireWall.\n
- You have probably heard of the Great Wall, which is the most famous attraction in China. The name Great Firewall comes from it. It’s a project operated by the Ministry of Public Security and started in 1998. It’s used to block websites which government don’t want people to access. \n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- These are the some famous examples that we can’t visit directly from China. But luckily, we have these copycats.\n
- There are various methods which are used by GFW.\n
- It can block the IP address of the server which the web site host on. It can also use DNS filtering and redirection to redirect the domain name to a fault address. URL and Package filtering will check the content of url or package to make sure it doesn’t contain forbidden keywords. If you search the forbidden keywords in search engines such as google, the GFW will not allow this query and reset the connection.\n
- However, since smart chinese people can build such a GFW, we can also find out some ways to bypass it.\n
- The most common way is use proxy server located outside of China. While its speed is very low. So many people choose to use some free auto-proxy software and onion routing, such as FreeGate and Tor. APIs which provided by application providers can be used to build new applications and host wherever you want. You can also buy accounts to use SSH tunnel and VPN connection to bypass the GFW.\n
- \n
- Though China has very strict regulations on the Internet, we can always find a way to cross the GFW. Because Chinese people’s desire for freedom is irresistible.\n
- My presentation is based on this paper.\n
- Any question?\n