本文通过指出计算机网络安全的内涵,并分析网络安全缺陷以及其产生的原因,得出确保网络安全的技术手段,对常见攻击手法及对策进行分析。随着计算机技术的不断发展,计算机网络已经被应用于经济、教育、军事等多个领域,计算机的网络安全也成为了国家、单位、个人信息安全的重大问题。本文就此提出笔者个人观点,望对日后计算机网络安全防护工作有所帮助。 This paper points out the connotation of computer network security, and analyzes the network security flaws and its causes, and draws the technical means to ensure network security, and analyzes the common attack tactics and countermeasures. With the continuous development of computer technology, computer network has been applied in many fields such as economy, education, military and so on. Computer network security has also become a major issue for the security of information of a country, a unit or an individual. This article put forward my personal point of view, look forward to the computer network security work in the future.