近几年,计算机技术得到了迅猛发展,也极大的推动了社会的进步,并且计算机技术也在不断普及,在计算机技术给人们带来便利的同时,也出现了越来越多的信息安全威胁,计算机一旦出现安全问题,可能会导致计算机不能正常使用,甚至导致计算机里的核心信息被窃,从而影响人们的正常生活和工作,也会带来一些损失,因此,应该重视网络安全的保护,重视计算机网络安全中的防火墙技术,本文主要针对防火墙技术的分类和优缺点进行了介绍,并且提出了一种新类型的实用型观点防火墙技术。 In recent years, the rapid development of computer technology has also greatly promoted the social progress, and computer technology is also unceasingly popularized. While computer technology has brought convenience to people, more and more information security has also emerged Threat, the computer once the security problems, may lead to the computer can not be used normally, and even lead to the computer core information is stolen, thus affecting people’s normal life and work, will bring some losses, therefore, should pay attention to network security protection , Emphasis on computer network security firewall technology, this paper focuses on the classification of firewall technology and advantages and disadvantages were introduced, and put forward a new type of practical point of view firewall technology.