中文摘要：

文章阐述了入侵检测系统的概念、组成、模型.然后详细综述了基于网络流量统计分析的入侵检测技术,以及研究的重点.最后分析了基于网络流量统计分析的入侵检测面临的问题和挑战,及可能的解决方案.

英文摘要：

At first this paper introduces the development process of intrusion detection, then it describes the detection. Secondly, intrusion detection techniques for statistics analysis based on network traffic are thoroughly discussed in this paper, and it also points the future research aspects. Finally we document some remaining problems and challenges, and give the possible solution.