Design of a Network Collaborative Defense Mechanism Based on SDN

The dynamic reconfigurability of Software Defined Network (SDN) makes it more flexible and convenient to control and manage network, which brings great challenge to existing network defense mechanisms at the same time. It will always lead to failure of defense mechanisms due to the adjustment and reconstruction of network logical topology, which makes it impossible to capture and control data flow in the network. Considering this problem, we propose a network collaborative defense mechanism based on flow table and data forwarding function of SDN. The architecture composition, service design and operating principle of the mechanism is elaborated in detail, and effectiveness of the mechanism is also verified through experiments.