计算机与现代化

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云环境下SDN的流量异常检测性能分析

  

  1. (1.中国科学院新疆理化技术研究所,新疆 乌鲁木齐 830011; 2.中国科学院大学,北京 100049; 3.核工业理化工程研究院,天津 300180)
  • 收稿日期:2015-05-13 出版日期:2015-10-10 发布日期:2015-10-10
  • 作者简介:马超(1989-),男,山西阳泉人,中国科学院新疆理化技术研究所硕士研究生,研究方向:SDN,网络安全; 程力(1973-),男,安徽安庆人,研究员,博士,CCF会员,研究方向:云计算,大数据分析,生物信息学; 孔玲玲(1988-),女,核工业理化工程研究院工程师,研究方向:工业工程。
  • 基金资助:
    新疆维吾尔自治区青年科技创新人才培养工程基金资助项目(2014721033)

Performance Analysis of Traffic Anomaly Detection in Cloud-based Software-defined Network

  1. (1. The Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Research Institute of Physical and Chemical Engineering of Nuclear Industry, Tianjin 300180, China)
  • Received:2015-05-13 Online:2015-10-10 Published:2015-10-10

摘要: 随着复杂的混合云网络逐渐成为云计算发展的瓶颈,软件定义网络(SDN)技术近年来成为学术界和工业界关注的热点。在网络安全领域,对于应用SDN来解决网络攻击的研究尚处于起步阶段,SDN是否能够高效检测来自内部的网络攻击尚无定论。针对该问题,在分析SDN技术框架的基础上,设计基于OpenStack的云环境实验方案。在传统云环境网络和SDN环境下同时测试2种流量异常检测算法,模拟Flood攻击和端口扫描攻击,分析SDN在检测攻击时的精确度和资源使用率。结果表明,在云环境下利用SDN检测内部威胁时比传统网络环境占用更少的物理内存而不影响精确度,但直接在SDN控制器上部署安全应用的方式也存在性能瓶颈。

关键词: 软件定义网络, 云平台, 流量异常检测, 网络安全, 性能分析

Abstract: The increasing complexity of hybrid cloud networks becomes a bottleneck of cloud computing. As a potential solution, SDN has gained great attentions from both industry and academia, especially in the network security domain. Research on utilizing SDN in network attack detection is still in its inception phase. Specifically, it has not been evaluated whether SDN can efficiently detect internal network attacks in a cloud environment. In this research we implement both SDN and traditional network infrastructures based on OpenStack platform. We simulate both flood and port-scan attacks and utilize two types of traffic anomaly detection algorithms. Experiment results indicate that the SDN method shows better performance in memory usage without degrading its accuracy, while it also suffers performance bottleneck when directly deployed into SDN controllers.

Key words: software defined network (SDN), cloud platform, traffic anomaly detection, network security, performance analysis

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