With the rapid development of Internet technology, the amount of network attacks and intrusions rises. Intrusion detection system is regarded as the second safe gate after firewall. This article introduces the basic concept, model and division of intrusion detection system, and then describes the analysis procedure and deployment of intrusion detection system, and looks forward to the future trend of intrusion detection technology in the end.%随着互联网技术的迅速发展,网络攻击和入侵事件与日俱增,入侵检测系统被认为是继防火墙之后的第二道网络安全闸门.本文介绍了入侵检测系统的基本概念、模型及分类,阐述了入侵检测系统的分析过程和部署,展望了入侵检测的未来发展趋势.
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