随着计算机网络技术的飞速发展,计算机网络已经成为人们活动中不可缺少的一部分。网络的规模不断扩大,其拓扑结构也日益复杂。与此同时,网络的安全问题也成为紧迫的问题。特别对于企业而言,如何保护其内部的局域网不受侵犯是规划网络时必须要考虑的问题。文章首先分析了网络安全问题的现状,指出了网络侵犯的典型类型,然后结合一个实例描述了建立完善的企业网络安全的策略。 With the rapid development of computer network technology, computer network has become an indispensable part of people’s activities. The scale of the network is constantly expanding, and its topological structure is also increasingly complicated. At the same time, the security of the Internet has become an urgent issue. Especially for enterprises, how to protect their internal LAN is not violated planning network must be considered. The article first analyzes the status quo of network security problems, points out the typical types of network infringement, and then describes the strategy of establishing a perfect enterprise network security based on an example.