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Cloud service providers and data centers offer their customers the ability to deploy virtual machines within multi-tenant environments. These virtual machines are typically connected to the physical network via a virtualized network configuration. This could be as simple as a bridged interface to each virtual machine or as complicated as a virtual switch providing more robust networking features such as VLANs, QoS, and monitoring. In this talk I will demonstrate the effects of VLAN hopping, ARP poisoning and Man-in-the-Middle attacks across every major hypervisor platform, including results of attacks originating from the physically connected network as well as within the virtual networks themselves. Each attack category that is discussed will be accompanied by a detailed proof of concept demonstration of the attack. Dr. Ronny L. Bull is an Assistant Professor of Computer Science at Utica College as well as an independent consultant with a focus in computer networking and information security. Dr. Bull earned his Ph.D. in Computer Science at Clarkson University in 2016 with a focus on layer 2 network security in virtualized environments. Ronny earned an A.A.S. degree in Computer Networking at Herkimer College in 2006, and completed both a B.S. and M.S. in Computer Science at SUNYIT in 2011. He also co-founded and is one of the primary organizers of the Central New York Intercollegiate Hackathon event which brings together computer science and cybersecurity students from regional colleges to compete against each other in offensive and defensive cybersecurity activities. ÿDr. Bull has had the privilege of presenting his research at multiple InfoSec venues such as DEF CON, DerbyCon, BSides Roc, and HackCon Norway.
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