软件定义网络架构下的安全问题综述

随着网络业务的多元化与网络基础服务能力的不断提升，企业网、云计算、数据中心等大量新兴应用场景迅速丰富，传统网络已不能满足其不断涌现的可扩展性、可管理性及安全保障等新需求，这一现状有力地推动以SDN为代表的当代网络架构的发展。然而随着学术界与产业界对SDN技术的研究及其设备的普及，安全问题逐渐成为制约其进一步发展的关键因素之一。针对SDN架构的技术发展背景进行分析，然后简析SDN技术的核心架构原理及目前的发展现状；结合SDN架构特点，针对其安全特性及其所面临的安全威胁进行详细分析，并深入讨论SDN网络安全研究的范畴与新兴发展方向。

Survey on Security Issues in Software Defined Networks

SDN is a new network architecture that achieves the separation between the network logical control function and the data forwarding function. With SDN technology and related equipment gradually mature and practical, the security issues have received increasing atten-tion. Presents a comprehensive survey of the research relating to security in software-defined networking. Discusses both the security en-hancements for SDN and the security challenges introduced by the SDN framework in details. Also sums up and presents a set of research fields and future research directions.