Using INSPECTOR Device to Stop Packet Injection Attack in SDN

The software-defined network (SDNs) architecture can easily be attacked by a malicious user in order to prevent an acceptable level of service. Therefore, SDN security is a hot research topic to improve the SDN architecture and to protect the service level of the SDN components. In this letter, the INSPECTOR is a hardware device added to the SDN architecture to protect a compromised controller from a packet injection attack by verifying the authentication of Packet-In Messages accessing network resources. With simulations, we show that the INSPECTOR device efficiently stops the attack and enhances the controller performance under malicious attack.