IEEE Transactions on Dependable and Secure Computing
IEEE Transactions on Dependable and Secure Computing (TDSC) is a bimonthly journal that publishes archival research results focusing on foundations, methodologies, and mechanisms that support the achievement—through design, modeling, and evaluation—of systems and networks that are dependable and secure to the desired degree without compromising performance. Read the full scope of TDSC
IEEE Transactions on Dependable and Secure Computing (TDSC) has moved to the OnlinePlus publication model.
From the November/December 2015 issue
Increasing Network Resiliency by Optimally Assigning Diverse Variants to Routing Nodes
By Andrew Newell, Daniel Obenshain, Thomas Tantillo, Cristina Nita-Rotaru, and Yair Amir
Networks with homogeneous routing nodes are constantly at risk as any vulnerability found against a node could be used to compromise all nodes. Introducing diversity among nodes can be used to address this problem. With few variants, the choice of assignment of variants to nodes is critical to the overall network resiliency. We present the Diversity Assignment Problem (DAP), the assignment of variants to nodes in a network, and we show how to compute the optimal solution in medium-size networks. We also present a greedy approximation to DAP that scales well to large networks. Our solution shows that a high level of overall network resiliency can be obtained even from variants that are weak on their own. We provide a variation of our problem that matches the specific communication requirements of applications run over the network (e.g., Paxos and BFT). Also, we analyze the loss in resiliency when optimally assigning variants based on inaccurate information about compromises.
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Submission Deadline: December 31, 2015
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