软件定义网络安全技术研究

Research on Software Defined Network Security Technology

随着网络规模的快速扩大及网络业务的多样化,原有的网络架构难以满足未来发展需要。软件定义网络(Software Defined Network,SDN)作为一种新兴技术,实现了控制面与数据面的解耦,能够提供网络的集中控制与流量的灵活调度,将引起通信领域的巨大变革。研究了SDN架构的特点及其面临的安全威胁;针对SDN安全技术研究现状进行了综述;从网络动态防御、软件定义监控和自身安全性增强3个方面提出了SDN安全技术的发展方向。在加强SDN自身安全性的同时提高了网络安全资源的动态调度能力。

With the rapid development of network scale and the diversification of network services, the original network structure is difficult to meet the needs of the future development.Software Defined Network （SDN） as a new technology realizes the separation of control plane and data plane,which can provide centralized network controll and the flexible traffic management.This will take place great changes in communication field.This paper firstly analyses the features of SDN architecture and the security threat;then gives a survey on the present development of SDN security;and finally propose the development orientation of SDN security technology including network dynamic defense,software defined monitoring,and security enforcement,which can reinforce the security of SDN,and enhance the dynamic arrangement of security resources.