随着互联网的普及和发展,尤其是Internet的广泛使用,使计算机应用更加广泛与深入。防火墙在维护网络和计算机安全中的作用也日益明显。本文从计算机防火墙的分类和防火墙的应用为重点进行简要分析。 With the popularity and development of the Internet, especially the extensive use of the Internet, the computer application is more extensive and in-depth. The role of firewalls in maintaining network and computer security is also becoming increasingly evident. This article from the classification of computer firewalls and firewall applications as the focus of a brief analysis.