I am a Ph.D graduate student in Electrical Engineering and Computer Science Department at Northwestern University and a member of the Northwestern Network Group. My advisor is Professor Aleksandar Kuzmanovic. I graduated from Shanghai Jiao Tong University in China in 1998. After that, I worked at Broadband Network Department in Alcatel Shanghai Bell Co., Ltd. for more than four years. I was conferred Cisco certified Internetworking Expert certificate in 2001. I joined Northwestern University and continued to study in the area of computer networks in 2005. My current research focuses on sustainable development of the Internet.

• Sustainable Development of the Internet
• Internet Measurements
• Inter-domain Routing
• Network Security

• Pollution Attacks and Defenses for Internet Caching Systems
  Leiwen Deng, Yan Gao, Yan Chen, and Aleksandar Kuzmanovic
  In Journal of Computer Networks, 52(5): 935-956, April 2008.
  [ .pdf | .pdf.gz ]
  An extended version of the ICNP 2006 paper.
• Diagnosing Spatio-Temporal Internet Congestion Properties
  Leiwen Deng and Aleksandar Kuzmanovic
  Under Submission
  [.pdf | .pdf.gz | .ppt | .ppt.gz]
  
  (Note: Animation effect in .ppt requires Microsoft PowerPoint XP or later version.)
• Pong: Diagnosing Spatio-Temporal Internet Congestion Properties (short version)
  Leiwen Deng and Aleksandar Kuzmanovic
  Poster paper in Proceedings of ACM SIGMETRICS 2007, San Diego, CA, June 2007.
  [.pdf | .pdf.gz] | .ppt | .ppt.gz]
  
• Internet Cache Pollution Attacks and Countermeasures
  Yan Gao, Leiwen Deng, Aleksandar Kuzmanovic, and Yan Chen
  In Proceedings of IEEE ICNP 2006, Santa Barbara, CA, November 2006.
  [.pdf | .ppt]