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A detailed analysis of the follow-up scanning performed by the Great Firewall of China
Karlstad University, Faculty of Health, Science and Technology (starting 2013).
2013 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The Great Firewall of China (GFC) represents one of the most sophisticated censoring infrastructures in the world. While several aspects of the GFC including HTTP keyword filtering and DNS tampering have been studied thoroughly in the past, recent work has shown that the GFC goes to great lengths to prevent its citizens from using the Tor anonymity network. By employing the so-called follow-up scanning technique, Tor bridge relays are blocked dynamically. In this thesis, we survey previous work in the area of the GFC ranging from HTTP keyword filtering and DNS tampering, to the Tor follow-up scanning. Furthermore, additional experiments are carried out to gain a better understanding of how the follow-up scanning is implemented as well as where the filtering occurs for different protocols.

Place, publisher, year, edition, pages
2013.
Keyword [en]
great firewall of china, internet censorship, censorship resistance, tor
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kau:diva-26523Local ID: DV:1OAI: oai:DiVA.org:kau-26523DiVA: diva2:608498
Subject / course
Computer Science
Uppsok
Technology
Supervisors
Examiners
Available from: 2013-03-01 Created: 2013-02-27 Last updated: 2013-03-01Bibliographically approved

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