本文的研究重点是对计算机网络安全的探讨,涉及到网络安全定义、特性,计算机网络安全存在的主要问题、并对问题提出相应的对策,以期能对计算机网络安全问题的应对有所裨益。当今时代是网络信息时代,网络的推广成为了一次科学技术的革命,并渗透到生活的方方面面。为了维护网络系统正常运转,会通过 This paper focuses on the study of computer network security, which involves the definition, characteristics and the main problems of computer network security. It also puts forward corresponding countermeasures to solve the problem of computer network security. Today’s era is the era of network information, the promotion of the Internet has become a revolution in science and technology, and infiltrate every aspect of life. In order to maintain the normal operation of the network system, will pass