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针对网络存在的越来越多的威胁,介绍了一种安全技术,即防火墙,它是一种访问控制技术,通过设置一系列安全规则对内外网的通信进行控制,检测信息,防止对重要信息的非法存取和访问,以达到保护系统的目的。虽然它不能解决所有的安全问题,但是能在一定程度上保护一个网络免受威胁,是比较常见的一种安全技术方法。本文从防火墙的功能、分类、部署应用等多个方面对其进行解释加深对防火墙的认识。
Aiming at more and more threats to the network, this paper introduces a security technology, namely firewall, which is an access control technology, which controls the communication between the internal and external networks by setting a series of security rules to detect the information and prevent the important information Illegal access and access, in order to achieve the purpose of protecting the system. Although it can not solve all the security problems, it can protect the network to a certain extent from being threatened. It is a common security technology method. This article from the firewall function, classification, deployment and other aspects of its interpretation to deepen its understanding of the firewall.