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Inferring the presence of reverse proxies through timing analysis

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Author
Alexander, Daniel R.
Date
2015-06
Advisor
Xie, Geoffrey
Beverly, Robert
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Abstract
This thesis presents a method for inferring the presence of a reverse proxy server using packet timing analysis from the vantage point of a client system. This method can determine whether Internet users are receiving web content from the actual source or from some potentially spoofed proxy device; leading to better risk assessment and understanding of the cyber terrain. By using only the measurement and comparison of three-way handshake and content request/delivery packet round trip times, we identify an accurate classifier that detects the presence of a reverse proxy server with over 98% accuracy. This is an improvement over other inference methods because all measurements can be done from an external client machine. A secondary yet significant contribution is the robust data set that was produced as a result of this research. We have collected a set of over 6 million data points from a known set of 30 globally dispersed machines, which was instrumental in our research efforts and will be used for further studies and exploration.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/45803
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  • 1. Thesis and Dissertation Collection, all items
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