防火墙应用指导手册
防火墙是为避免不合法访问或保护专用网络而设计的一种系统。防火墙可用于硬件、软件或二者的组合。防火墙常常被用于阻止不合法的互联网用户访问接入互联网的专用网络。本文将从防火墙的简介、种类、选择的方法、配置、管理和保护等几个方面向您做具体的解说。(A firewall is a system designed to avoid illegal access or protect a private network. Firewalls can be used in hardware, software, or a combination of both. Firewalls are often used to prevent unauthorized Internet users from accessing private networks that access the Internet. This article will give you specific explanations from several aspects such as the introduction, types, selection methods, configuration, management and protection of firewalls.)
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