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1、查询iptables服务器是否安装2、安装iptables3、查看iptables已有规则-I表示查看4、清空iptables已有规则-F表示清空5、设置iptables默认策略为拒绝-P表示默认6、设置iptables默认策略为允许7、设置对所有的ping操作的策略为允许Ping...

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Linux学习笔记 --iptables防火墙配置

iptables防火墙配置一、防火墙简介 1、功能： 1）通过源端口，源IP地址，源MAC地址，包中特定标记和目标端口，IP，MAC来确定数据包是否可以通过防火墙 2）分割内网和外网【附带的路由器的功能】 3）划分...

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