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Security and Communication Networks
Volume 2018, Article ID 4123736, 10 pages
Research Article

Security Analysis of Dynamic SDN Architectures Based on Game Theory

National Digital Switching System Engineering & Technological R&D Center, Zhengzhou, Henan 450002, China

Correspondence should be addressed to Chao Qi; moc.361@07174173931

Received 26 September 2017; Accepted 26 December 2017; Published 23 January 2018

Academic Editor: Zhiping Cai

Copyright © 2018 Chao Qi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Security evaluation of SDN architectures is of critical importance to develop robust systems and address attacks. Focused on a novel-proposed dynamic SDN framework, a game-theoretic model is presented to analyze its security performance. This model can represent several kinds of players’ information, simulate approximate attack scenarios, and quantitatively estimate systems’ reliability. And we explore several typical game instances defined by system’s capability, players’ objects, and strategies. Experimental results illustrate that the system’s detection capability is not a decisive element to security enhancement as introduction of dynamism and redundancy into SDN can significantly improve security gain and compensate for its detection weakness. Moreover, we observe a range of common strategic actions across environmental conditions. And analysis reveals diverse defense mechanisms adopted in dynamic systems have different effect on security improvement. Besides, the existence of equilibrium in particular situations further proves the novel structure’s feasibility, flexibility, and its persistent ability against long-term attacks.