NeTS: Small: xBeam: Cross-Layer Beamforming Against Denial of Service Attacks in Wireless Networks

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This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5.)It is commonly understood that to achieve a desired level of security in wireless networks is a bigger challenge than in wired networks. The denial of service (DoS) attack is a prominent threat in wired networks, and is a more potent threat in the wireless domain. This project aims to explore enabling approaches for a novel beamforming framework with cross-layer interactions, referred to as xBeam, as a defense against DoS attacks in wireless networks. This project examines various DoS attacks, develops xBeam algorithms, evaluates the effectiveness of xBeam in deterring DoS attacks, and validates the algorithms using a wireless test bed.Intellectual merit: This project develops a novel defense approach against DoS attacks in wireless networks, which is based on adaptive beamforming with cross-layer interactions. The approach can deter DoS attacks across different networking layers, multiple DoS attacks mounting from different spatial directions, and attacks mounted by malicious attackers who are mobile.Broader impact: This research contributes to a substantial improvement in wireless network security and contributes to the advance of a networked mobile wireless information society. The project supports research oriented education, by providing opportunities for advanced study of wireless network security through coursework and hands-on experimentation. This research also provides quality research experiences for undergraduate students in the summer, particularly students from underrepresented groups.