Abstract:

With the rapid development of the network technology, big data, cloud computing, mobile Internet, quantum communication practical technology, the informatization era continue to move forward. At the same time, the emergence of software defined network provides technical direction for the new generation network architecture. SDN’s core idea is changing the tight coupling of the forwarding path of the traditional network control software and hardware, making the application, control and data forwarding coupled, realizing the flexible network of control, and enhancing the security of network virtualization. From SDN technology this paper introduced the relationship between the development of network virtualization, SDN technology and network virtualization and network virtualization security, and in-depthly analyzed the security challenges faced by the current network virtualization, including security challenges faced by the physical security equipment, a controller, and a device communication. At last, this paper put forward the corresponding solutions from the safety and reliability of the network controller and authenticated devices communication mode, to the security application virtualization SDN security architecture and software defined security scheme.

Key words: virtualization network, SDN, controller, network security