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Description
Title: | Security threats to the MAC-layer in wireless networks |
Author(s): | Choi, Jihyuk |
Director of Research: | Hu, Yih-Chun |
Doctoral Committee Chair(s): | Hu, Yih-Chun |
Doctoral Committee Member(s): | Borisov, Nikita; Caesar, Matthew C.; Vaidya, Nitin H. |
Department / Program: | Electrical & Computer Eng |
Discipline: | Electrical & Computer Engr |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | Ph.D. |
Genre: | Dissertation |
Subject(s): | Medium access protocol
Wireless networks Security |
Abstract: | Medium access control (MAC) protocol security is important in wireless networks due to the lack of physical access control that normally exists in wired networks in the form of connecting a cable. Most efforts in standards organizations and academic research focus on the requirements of confidentiality and authentication. These approaches to wireless MAC-layer security often ignore two other threats to security: attacks against availability and incorrect implementation of MAC protocol and driver routines. The former can prevent a user from communicating at all, whereas the latter can have consequences ranging from dropped packets to complete host compromise. This dissertation comprehensively investigates the threats against wireless MAC protocols: being uncooperative, denial-of-service (DoS), sniffing, man-in-the-middle (MITM), and fuzzing. I provide a mathematical model to understand how network parameters impact the uncooperative carrier-sense-misbehaving attackers. Next, this dissertation shows a novel DoS attack that targets queuing behavior of access points by exploiting some factors of the IEEE 802.11 MAC protocol. Further, I propose a scheme that establishes a wireless connection that is secure against sniffing and MITM between a client device and an access point in IEEE 802.11 hotspots. Finally, I propose MAC-layer threats including fuzzing in IEEE 802.16e mobile WiMAX networks. |
Issue Date: | 2012-09-18 |
URI: | http://hdl.handle.net/2142/34282 |
Rights Information: | Copyright 2012 Jihyuk Choi |
Date Available in IDEALS: | 2012-09-18 |
Date Deposited: | 2012-08 |
This item appears in the following Collection(s)
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Dissertations and Theses - Electrical and Computer Engineering
Dissertations and Theses in Electrical and Computer Engineering -
Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois