一种基于SDN的开放SaaS平台网络安全体系设计

为解决开放软件即服务（SaaS）平台下的网络安全问题，将软件定义网络（SDN）与开放SaaS平台建设相结合，提出了一种基于SDN的开放SaaS平台网络安全体系设计思路。在对系统物理模型、功能模型与协同模型进行分析的基础上，设计了系统体系结构，分析了体系构成关键要素，给出了系统典型应用示例。基于SDN开展SaaS平台网络安全系统建设，对提高系统的安全性与开放性、构建满足用户个性化需求的网络安全体系具有重要意义。

Design of a network security architecture for open SaaS platform based on SDN

To solve the network security problem of open software as a service(SaaS) platform, this paper combines the software defined network(SDN) technology and the platform building, and puts forward an idea of building a network security architecture for open SaaS platform based on the SDN devices.According to the analysis of the physical model, the functional model and the cooperation model of the system,the architecture of the system is designed,the key elements of the architecture are analyzed, and then,the typical application of the system is provided. Building the network security system based on SDN has great significance on improving the security and expansibility of network security system and providing the user characteristic security service.