2026-09-20T17:49:35Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/34416 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Hu, Yih-Chun Hu, Yih-Chun Caesar, Matthew C. Kumar, P.R. Vaidya, Nitin H. Kim, Dongho 2012-09-18T21:15:49Z 2012-09-18T21:15:49Z 2012-08 2012-09-18T21:15:49Z 2012-08 This dissertation reports research conducted in two aspects of secure network resource management: strengthening security by proposing a defense architecture with stronger security property and increasing deployability. In the first part of this dissertation, we reveal a new threat called false feedback attack in wireless networks using channel-aware protocols. Our simulations show that an attacker overclaiming its channel condition is able to completely steal other benign users' service opportunity under a high-efficiency scheduler. A fair scheduler can mitigate this attack but cannot provide high efficiency. We propose a new secure channel estimation scheme to maintain security while achieving high efficiency at the same time. Our analysis and simulations show that our scheme prohibits any incentive for an attacker performing false feedback attack and gives higher throughput than PF scheduler, a representative fair scheduler. In the second part, we present CRAFT, a collusion-resistant DoS (denial of service) defense. CRAFT defends against a colluding receiver who intentionally allows a colluding sender to send excessive traffic. Our basic idea is that a CRAFT router securely emulates TCP operation. Our simulations show that CRAFT guarantees service availability even with colluding attackers. Our prototype system shows the feasibility of CRAFT. In the third part, we present Mirage, a deployable DoS defense. Prior defenses require other network operators to deploy the same defense mechanism. Mirage does not impose this requirement. Our analysis and prototype system show that Mirage does not require other network operators' deployment and is feasible with commodity PCs. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-05-16T19:29:35Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Kim_Dongho.pdf: 2110140 bytes, checksum: 8f87acd595938d7ec52204313af0a8d1 (MD5) Made available in DSpace on 2012-09-18T21:15:49Z (GMT). No. of bitstreams: 2 Kim_Dongho.pdf: 2110140 bytes, checksum: 8f87acd595938d7ec52204313af0a8d1 (MD5) license.txt: 4058 bytes, checksum: 04b3a55b7893c85364f85552e55214cc (MD5) http://hdl.handle.net/2142/34416 en Copyright 2012 Dongho Kim Security Internet Wireless Network Denial of service (DoS) defense Secure resource management in networks Electrical & Computer Eng 1933 Electrical & Computer Engr 1200 University of Illinois at Urbana-Champaign Dissertation Ph.D. PHD:Electr & Computer Eng-UIUC 10KS1200PHD