论文部分内容阅读
防火墙是一种行之有效的网络安全机制,它是在网络的内部与外部之间实施安全防范的系统。文章阐述了防火墙技术的功能和关键技术,并探讨了如何在实际中实施改进防火墙。在本篇论文中采用了对比论证的方法,目的在于有所比较。论文在理论论述的同时也注重对所述内容加以举例说明,“构建基于Linux的防火墙”一节即为前述理论的实践。
Firewall is an effective network security mechanism, it is in the network between the internal and external implementation of security system. The article expounds the function and key technology of the firewall technology, and discusses how to implement the improved firewall in practice. In this paper, the method of comparison and argumentation is used, the purpose is to compare. Papers in the theoretical discourse at the same time also pay attention to the contents of an example to illustrate the “building a Linux-based firewall ” section is the theory of practice.