Dissertation/Thesis Abstract

A multi-channel defense against communication denial -of -service attacks in wireless networks
by Alnifie, Ghada Matooq, Ph.D., George Mason University, 2008, 165; 3338544
Abstract (Summary)

In this dissertation, we focus on the security and reliability of wireless sensor networks (WSNs). We specifically address attacks which target the availability of the wireless communication medium. Due to their unattended functioning and over-the-air communication, WSNs are particularly vulnerable to link-level denial-of-service (DoS) attacks against the communication channel. Our main contribution is to design reactive solutions that can achieve a higher throughput out of an attacked region via the use of parallel communication paths.

Our approach uses a hybrid Medium Access Control layer consisting of both CSMA and time-slotted channel access mechanisms. We define and analyze a set of distributed transmission scheduling algorithms for use in the attacked region, ranging from management-free to precise coordinated scheduling. To implement our techniques, we develop a distributed data exfiltration protocol which has two variants, one to act as a response against single-hop attacks and another which provides resilience against attacks affecting multi-hop regions.

Extensive experimental evaluation shows that under many attack scenarios our approach achieves a data delivery rate comparable to pre-attack conditions and far lower latency than other similar approaches. Furthermore, a simulation-based evaluation of the data exfiltration methods and protocols as a fault-tolerance mechanism in protecting a critical infrastructure has demonstrated that its incorporation in the application’s design will lead to increased reliability and robustness in WSNs.

Indexing (document details)
Advisor: Simon, Robert
Commitee:
School: George Mason University
School Location: United States -- Virginia
Source: DAI-B 69/12, Dissertation Abstracts International
Source Type: DISSERTATION
Subjects: Computer science
Keywords: Denial-of-service attacks, Multichannel defenses, Network security, Wireless communication, Wireless networks
Publication Number: 3338544
ISBN: 978-0-549-93378-6
Copyright © 2019 ProQuest LLC. All rights reserved. Terms and Conditions Privacy Policy Cookie Policy
ProQuest