1、firewalld的基本使用

启动: systemctl start firewalld

查看状态: systemctl status firewalld

停止: systemctl disable firewalld

禁用: systemctl stop firewalld

2.systemctl是CentOS7的服务管理工具中主要的工具,它融合之前service和chkconfig的功能于一体。

启动一个服务:systemctl start firewalld.service

关闭一个服务:systemctl stop firewalld.service

重启一个服务:systemctl restart firewalld.service

显示一个服务的状态:systemctl status firewalld.service

在开机时启用一个服务:systemctl enable firewalld.service

在开机时禁用一个服务:systemctl disable firewalld.service

查看服务是否开机启动:systemctl is-enabled firewalld.service

查看已启动的服务列表:systemctl list-unit-files|grep enabled

查看启动失败的服务列表:systemctl –failed

3.配置firewalld-cmd

查看版本: firewall-cmd –version

查看帮助: firewall-cmd –help

显示状态: firewall-cmd –state

查看所有打开的端口: firewall-cmd –zone=public –list-ports

更新防火墙规则: firewall-cmd –reload

查看区域信息: firewall-cmd –get-active-zones

查看指定接口所属区域: firewall-cmd –get-zone-of-interface=eth0

拒绝所有包:firewall-cmd –panic-on

取消拒绝状态: firewall-cmd –panic-off

查看是否拒绝: firewall-cmd –query-panic

那怎么开启一个端口呢

添加 firewall-cmd –zone=public –add-port=80/tcp –permanent (–permanent永久生效,没有此参数重启后失效)

重新载入 firewall-cmd –reload

查看 firewall-cmd –zone= public –query-port=80/tcp

删除 firewall-cmd –zone= public –remove-port=80/tcp –permanent