社会经济和科学技术的不断发展使得计算机网络走进人们的生活,并且发挥着越来越重要的作用,人们的生活因此变得便捷,工作变得简单,但是其中也存在很多安全隐患,使得人们的隐私和企业的机密受到了威胁。因此许多研究学者把提高计算机安全可靠性作为现在研究的重点。本文从三个方面表述了如何使计算机网络的安全运行。 The continuous development of social economy and science and technology make the computer network into people’s life and play an increasingly important role in making people’s lives easier and easier to work. However, there are also many potential safety problems that make people Privacy and corporate secrets are at risk. Therefore, many researchers take the improvement of computer security as the focus of current research. This article expresses how to make the computer network run safely from three aspects.