9、防火墙规则的保存与恢复iptables-save 保存，默认输出到屏幕iptables-restore 恢复，加上文件写入/etc/sysconfig/iptables1. [root@Ansible ~]# iptables-save >/etc/sysconfig/iptables 2. [root@Ansible ~]# cat /etc/sysconfig/iptable...

文章 2023-08-10 来自：开发者社区

【运维知识进阶篇】iptables防火墙详解（iptables执行过程+表与链概述+iptables命令参数+配置filter表规则+NAT表实现共享上网、端口转发、IP映射）（一）

这篇文章给大家介绍下iptables防火墙，防火墙大致分三种，分别是硬件、软件和云防火墙。硬件的话部署在企业网络的入口，有三层路由的H3C、华为、Cisco（思科），还有深信服等等；软件的话一般是开源软件，写在网站内部，最常见的有iptables（写入Linux内核）和firewalld（CentOS7有的），云防火墙就是阿里云业务的防火墙安全组等等。名词解释在介绍防火墙之前，我们先了解几个名词....

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