• Karthik Srinivasan
• Saravanan Matheswaran
• Prabaharan Sengodan

In recent years, Software-Defined Networking (SDN) has been a focus of research. SDN offers numerous benefits including on-demand provisioning, automated load balancing, streamlined physical infrastructure and the ability to scale network resources as per the need. SDN can manage network traffic through software and the administrator gain a much higher degree of control, which provides the ability to change network rules on the fly. In the near future, SDN can replace traditional networking. At the same time, careful attention needs to be paid to security at this early design stage. This paper mainly focuses on the security aspects of SDN. We begin by discussing the architecture of SDN. According to the design architecture, we discuss the possible security defects in SDN. Finally discuss various threats and its countermeasures based on three-layer architecture, i.e. data forwarding layer, control layer, and application layer. In addition to that various defensive mechanisms are highlighted.

Software Defined Networking, SDN, Security, Countermeasures

"SECURITY THREATS AND COUNTERMEASURES IN SOFTWARE DEFINED NETWORKING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.386-391, March-2019, Available :http://www.jetir.org/papers/JETIRAU06053.pdf

"SECURITY THREATS AND COUNTERMEASURES IN SOFTWARE DEFINED NETWORKING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp386-391, March-2019, Available at : http://www.jetir.org/papers/JETIRAU06053.pdf