Abstract
Software Defined Networks (SDN) decouples control plane and data plane, which simplifies network management. However, there are still some security threats which limit the large scale deployment of SDN. In this paper, we present a solution which integrates Quantum Key Distribution (QKD) technology with SDN in the southbound interface to fulfill secure communication between controller and switches. Rather than merely employ Transport Level Security (TLS) protocol in OpenFlow standard, the proposed scheme can prevent the Man-In-The-Middle (MITM) attack.