SIS Research Center Seminar -

	SIS Research Center Seminar

	The DDoS Attacks and Defenses in Ad Hoc Networks

by
Professor Chu Chao-Hsien
Visiting Associate Professor, School of Information Systems,
Singapore Management University

Date:	25th November 2005 (Friday)
Time:	11:00 am to 1:00 pm
Venue:	Meeting Room 80-04-011, Level 4 School of Information Systems, Singapore Management University
	80 Stamford Road Singapore 178902

All are encouraged to attend, but attendance of SIS Post-Doctoral Fellows and SIS Research Fellows is required.

Lunch will be provided.

Please RSVP before 22nd November 2005.

Synopsis

Increased instances of distributed denial-of-service (DDoS) attacks on the Internet have raised questions on whether and how ad hoc networks are vulnerable to such attacks. This paper studies the special properties of such attacks in ad hoc networks. We examine two types of area-congestion-based DDoS attacks – remote and local attacks – and present in-depth analysis on various factors and attack constraints that an attacker may use and face. We find that (1)there are two types of congestion – self congestion and cross congestion - that need to be carefully monitored; (2) the normal traffic itself causes significant packet loss in addition to the attack impacts in both remote and local attacks; (3) the number of flooding nodes has major impacts on remote attacks while, the load of normal traffic and the position of flooding nodes
are critical to local attacks; and (4) given the same number of flooding nodes and attack loads, a remote DDoS attack can cause more damage to the network than a local DDoS attack.

About the speaker

Professor Chu is a Visiting Associate Professor in School of Information Systems, Singapore Management University since August 2005. Professor Chu is Associate Professor of Information Sciences and Technology and an Affiliate Associate Professor of Management Science, The Pennsylvania State University. As one of the five founding faculty members of the School of Information Sciences and Technology (IST), he has devoted significant effort to help establish the new School.

Professor Chu received his Ph.D. in Business Administration (major in Operations Management and Information Systems) from the Pennsylvania State University in 1984, an MBA from Tatung Institute of Technology (Taiwan), and a B.E. in Industrial Engineering (I.E.) from Chung Yuan University (Taiwan). Before returning to Penn State in 1999, Professor Chu was on the faculty of Iowa State University, Baruch College (City University of New York - CUNY), the Tatung Institute of Technology (Taiwan), and in 1991/1992 was Visiting Associate Professor of Management Sciences at the University of Tsukuba (Japan). He is currently Honorary Adjunct Professor of Management and Engineering at the Hebei University of Technology (China), where he serves as Chief Academic Advisor to the School of Management. He has provided consulting services to a number of companies in China, Taiwan, and North America, and his industrial experience extends to serving as project leader and section chief at Tatung Company, a multinational company, with headquarters in Taipei.

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SIS Research Center