Towards Blockchain-Based Software-Defined Networking: Security Challenges and Solutions

Wenjuan LI  Weizhi MENG  Zhiqiang LIU  Man-Ho AU  

IEICE TRANSACTIONS on Information and Systems   Vol.E103-D   No.2   pp.196-203
Publication Date: 2020/02/01
Publicized: 2019/11/08
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2019INI0002
Type of Manuscript: INVITED PAPER (Special Section on Security, Privacy, Anonymity and Trust in Cyberspace Computing and Communications)
software defined networking,  blockchain technology,  security challenges,  attack and defence,  Internet-of-Things,  

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Software-Defined Networking (SDN) enables flexible deployment and innovation of new networking applications by decoupling and abstracting the control and data planes. It has radically changed the concept and way of building and managing networked systems, and reduced the barriers to entry for new players in the service markets. It is considered to be a promising solution providing the scale and versatility necessary for IoT. However, SDN may also face many challenges, i.e., the centralized control plane would be a single point of failure. With the advent of blockchain technology, blockchain-based SDN has become an emerging architecture for securing a distributed network environment. Motivated by this, in this work, we summarize the generic framework of blockchain-based SDN, discuss security challenges and relevant solutions, and provide insights on the future development in this field.