Journal
IEEE COMMUNICATIONS SURVEYS AND TUTORIALS
Volume 18, Issue 1, Pages 623-654Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/COMST.2015.2453114
Keywords
Software-defined networking; SDN; network security; OpenFlow; secure SDN architecture
Funding
- EPSRC [EP/H049606/1, EP/N508664/1, EP/J006238/1, EP/G034303/1, EP/K004379/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K004379/1, EP/N508664/1, EP/G034303/1, EP/J006238/1, EP/H049606/1] Funding Source: researchfish
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The proposition of increased innovation in network applications and reduced cost for network operators has won over the networking world to the vision of software-defined networking (SDN). With the excitement of holistic visibility across the network and the ability to program network devices, developers have rushed to present a range of new SDN-compliant hardware, software, and services. However, amidst this frenzy of activity, one key element has only recently entered the debate: Network Security. In this paper, security in SDN is surveyed presenting both the research community and industry advances in this area. The challenges to securing the network from the persistent attacker are discussed, and the holistic approach to the security architecture that is required for SDN is described. Future research directions that will be key to providing network security in SDN are identified.
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