Abstract: this paper discussed four network security problems-network insecurity problems network security classification network security policy and network security measure.
文摘：从网络所面临的威胁、网络安全等级、网络安全策略和网络安全措施等四个方面，分析与探讨网络安全问题。
Some research point out, the majority of network security threatens from the system interior, so we are urgent need to use one kind of new measure and the technology safeguard the network security.
有研究指出，大部分的网络安全威胁来自系统内部，因此，我们迫切的需要采用一种新的措施和技术来保障网络的安全。
Network security is more and mose important, so that the demand of network defense measure is more urgent.
人们对网络安全越来越关注，对网络安全防范措施的需求也更为迫切。
Network isolation is an important security measure, it aims to restrict network resource sharing, preventing information omitting among different networks.
网络隔离是重要的网络安全措施，其目的是禁止网络之间的资源共享，防止一个网络的信息泄露到另一个网络上去。
Intrusion detection system is an important measure to protect network security. But the IDS triggered thousands of false alarms, which make network security analyst tired of dealing with these alarms.
入侵检测系统是一种重要的网络安全防护措施，但是，IDS常常触发大量误警，使得网络安全员不堪重负。
Intrusion detection system is an important measure to protect network security. But the IDS triggered thousands of false alarms, which make network security analyst tired of dealing with these alarms.
入侵检测系统是一种重要的网络安全防护措施，但是，IDS常常触发大量误警，使得网络安全员不堪重负。
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