Main Article Content
The promise of greater network application creativity and the notion of software-defined networking have gained traction in the networking industry due to reduced network carrier prices (SDN). Developers are eager to unleash a range of new hardware, applications and services that meet SDN requirements, fueled by the enthusiasm of holistic network visibility and the ability to configure network applications. However, in the midst of it all, there is one thing that stands out; one crucial aspect has just recently joined the discussion: network security. This paper surveys protection in SDN, introducing both research and industry advancements in this field. The complexities of protecting the network from persistent attackers are addressed, as is the systemic approach to security design needed for SDN. The efficient routing schemes are necessary to achieve load balancing in SDN, so a comprehensive survey is taken in the existing methods in with the hope of advancing SDN and inspiring new solutions.