Dartmouth College Computer Science
Technical Report series
TR search TR listserv
|By author:||A B C D E F G H I J K L M N O P Q R S T U V W X Y Z|
|By number:||2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986|
Researchers studying computer networks rely on the availability of traffic trace data collected from live production networks. Those choosing to share trace data with colleagues must first remove or otherwise anonymize sensitive information. This process, called sanitization, represents a tradeoff between the removal of information in the interest of identity protection and the preservation of data within the trace that is most relevant to researchers. While several metrics exist to quantify this privacy-utility tradeoff, they are often computationally expensive. Computing these metrics using a sample of the trace, rather than the entire input trace, could potentially save precious time and space resources, provided the accuracy of these values does not suffer.
In this paper, we examine several simple sampling methods to discover their effects on measurement of the privacy-utility tradeoff when anonymizing network traces prior to their sharing or publication. After sanitizing a small sample trace collected from the Dartmouth College wireless network, we tested the relative accuracy of a variety of previously implemented packet and flow-sampling methods on a few existing privacy and utility metrics. This analysis led us to conclude that, for our test trace, no single sampling method we examined allowed us to accurately measure the trade-off, and that some sampling methods can produce grossly inaccurate estimates of those values. We were unable to draw conclusions on the use of packet versus flow sampling in these instances.
Senior Thesis. Advisor: David Kotz.
Bibliographic citation for this report: [plain text] [BIB] [BibTeX] [Refer]
Or copy and paste:
Phillip A. Fazio, "Effects of network trace sampling methods on privacy and utility metrics." Dartmouth Computer Science Technical Report TR2011-697, June 2011.
Notify me about new tech reports.
Search the technical reports.
To receive paper copy of a report, by mail, send your address and the TR number to reports AT cs.dartmouth.edu
Copyright notice: The documents contained in this server are included by the contributing authors as a means to ensure timely dissemination of scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.
Technical reports collection maintained by David Kotz.