【作者】 刘志祥；

【导师】 石永革；

【作者基本信息】 南昌大学 ， 计算机应用技术， 2005， 硕士

【摘要】 随着网络的普及,Linux系统在网络服务器中得到广泛使用,它的安全性越来越受到人们的重视。 本论文首先研究了Linux系统以及运行于该系统的应用程序漏洞,分级讨论了防御对Linux服务器攻击的方法,并着重介绍了Linux文件系统的安全问题。 其次,从Linux基本安全机制、数据传输加密和Linux防火墙等方面来讨论了如何构建安全的Linux系统。 最后,详细讨论和分析了现有Linux嗅探器软件的原理与特征,针对其主要缺陷和实际需求,设计了一种新型的嗅探器,给出了其需求分析、概要设计和具体方案,并予以实现。此外,还提出了防范黑客对Linux系统进行嗅探攻击的方案。 在文章的最后部分,指出了本研究存在的不足和缺陷,并对Linux网络安全的未来发展作出了展望。更多还原

【Abstract】 With the popularization of the internet, Linux system is widely used as network server, its security is concerned more and more.This thesis, firstly, studied the Linux system and some leaks of the applications running on it, discussed the ways how to defend the attacks to Linux servers, and introduced the security of Linux file systems.Secondly, it discussed how to set up a safe Linux system in the way of basic safety mechanism, data delivering encrypts, firewall and so on.Finally, it still analyzed Linux sniffer software. In view of the disadvantages of those software, I thought out a new-fashioned sniffer in terms of the actual requirements, and detailed made out its requirement analysis, summary designation and concrete realizations, then carried it out. At the same time, I also put forward the way to keep away from the sniff attack.In the end of this article, I pointed out some shortcomings and bugs in my designation and predicted the future of Linux network security.更多还原