在这个信息技术快速发展的时代,互联网早已涉及到人类生活的方方面面,在推动经济技术进步及提高人类生活水平等方面有着不可估量的影响。然而就是在这“影响”二字中,既有为人类提供快捷方便的信息而带来的喜悦,也有诸多不利影响。例如“黑客”“病毒”等的出现影响了许多大企业,并带来很多无法估量的损失。因而,局域网硬件维护与网络安全维护显得尤为重要。本文主要分析了局域网硬件及网络安全在应用中的问题,并总结出解决问题的有效方法。 In this era of rapid development of information technology, the Internet has long been involved in all aspects of human life and has an immeasurable impact on promoting economic and technological progress and raising the standard of living of people. However, it is in this “influence ” two words, both for the human to provide quick and easy information, the joy, but also a lot of adverse effects. For example, the advent of “hacking ” “viruses ” has affected many large enterprises and brought a lot of incalculable losses. Therefore, LAN hardware maintenance and network security maintenance is particularly important. This paper analyzes the LAN hardware and network security in the application of the problem, and summed up the effective solution to the problem.