The application of optical fiber communications in university security precaution system is described generally.

概述了光纤通信在高校安全防范系统中的应用。

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The category of the security of information system is classified. With each kind of attack principle analysed, the precaution measures and the solutions are brought up.

对信息系统安全种类进行了划分，对各种攻击原理进行了分析并提出了防范措施和解决方案。

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Therefore, the most urgent key project for us to study is to solve how to take advantage of security technology precaution, to construct an effective multiple precaution panic alarm system.

因此，如何利用安全技术防范的优势，构建起有效的社区安全防范综合报警服务体系，就成了当前迫切需要研究和解决的重要课题。

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Another basic precaution against the small-fry hacker is to turn on security features built into the operating system, Winkler said.

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The system is modeled after military base security protocols in which a color code signifies the level of precaution and perceived threat, according to two officials involved in developing it.

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