You know that Snort is an intrusion detection system, but how does it detect intrusion?
您知道Snort是一种入侵检测系统，但它是如何检测入侵的呢？
This Cold War-Era intrusion-detection system was designed to blend in with the terrain and could detect movement of people, animals or objects up to 300 meters away.
这款冷战时期的侵入侦测系统旨在与周围环境融为一体，它能够探测300米之外的任何活动物体。
Intrusion detection is a technology that can detect intrusion and make response before network system will get harm.
入侵检测技术可以在网络系统受到损害前对入侵行为做出拦截和响应。
This method can detect intrusion action on system level, network level and user level, simulation experiment indicates the method has very highly detection ability and robust ability.
该方法能够检测系统级、网络级和用户级的入侵行为，模拟实验表明该方法有很强的检测能力和较好的鲁棒性。
Experiment shows that the system model can detect known intrusion modes with very high detection rate, and also can detect some unknown intrusion modes.
实验表明，该系统对已知攻击模式具有很高的检测率，对未知攻击模式也具有一定的检测能力。
IDS (intrusion Detection System) is a tool to detect the network intrusion actions.
入侵检测系统是用来检测网络入侵行为的工具。
The main goal of Intrusion Detection system (IDS) is to detect unauthorized use, misuse and abuse of computer systems by both system insiders and external intruders.
入侵检测系统(IDS)的主要目标是检测计算机系统内部或外部入侵者的非授权使用、误用和滥用。
The main goal of intrusion detection is to detect unauthorized use, misuse and abuse of computer systems by both system insiders and external intruders.
入侵检测的主要目标是用于检测非授权误用以及系统内部与外部的入侵行为。
Network-based intrusion detection system is based on network traffic, network protocol analysis and packet data to detect intrusion.
基于网络的入侵检测系统根据网络流量、网络数据包和协议分析来检测入侵。
Intrusion Prevention System (IPS) not only can detect malicious behavior, but also can stop the malicious behavior.
入侵防御系统不仅能检测网络中的入侵和攻击行为，并且能够及时地阻断入侵和攻击行为。
Many methods are used in analysis model to detect intrusion actions, such as protocol analysis, expert system, application layer data reconstruction, intrusion detection.
对于获得的数据，分析模块采用多种方式综合分析入侵行为，包括协议分析、专家系统、应用数据还原、入侵检测等技术。
The NN system in the model need lucubrate, and the result display, the model is effective, it can detect the intrusion action in lowly mistake rate.
模型中所使用的NN系统尚需进一步深入研究，但实验结果表明，该模型是有效的，能够以较低的错误率检测到入侵行为。
Traditionally, intrusion detection systems detect intrusions at the operating system(OS)level.
传统的入侵检测系统方法是在操作系统级检测入侵。
Experimental result proves that the model can detect intrusion from the network connection data at a lower system false alarm rate and a higher detection rate.
实验结果表明，与其他模型相比，该模型具有较低的误警率和较高的检测率。
Experimental result proves that the model can detect intrusion from the network connection data at a lower system false alarm rate and a higher detection rate.
实验结果表明，与其他模型相比，该模型具有较低的误警率和较高的检测率。
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