防火墙常用命令

安装Firewall命令：

 yum install firewalld firewalld-config

Firewall开启常见端口命令：

firewall-cmd –zone=public –add-port=80/tcp –permanent
firewall-cmd –zone=public –add-port=443/tcp –permanent
firewall-cmd –zone=public –add-port=22/tcp –permanent
firewall-cmd –zone=public –add-port=21/tcp –permanent
firewall-cmd –zone=public –add-port=53/udp –permanent

Firewall关闭常见端口命令：

firewall-cmd –zone=public –remove-port=80/tcp –permanent
firewall-cmd –zone=public –remove-port=443/tcp –permanent
firewall-cmd –zone=public –remove-port=22/tcp –permanent
firewall-cmd –zone=public –remove-port=21/tcp –permanent
firewall-cmd –zone=public –remove-port=53/udp –permanent

批量添加区间端口

 firewall-cmd –zone=public –add-port=4400-4600/udp –permanent
firewall-cmd –zone=public –add-port=4400-4600/tcp –permanent

开启防火墙命令：

systemctl start firewalld

重启防火墙命令：

 firewall-cmd –reload 或者 service firewalld restart

查看端口列表：

 firewall-cmd –permanent –list-port

禁用防火墙

 systemctl stop firewalld

设置开机启动

  systemctl enable firewalld

停止并禁用开机启动

 sytemctl disable firewalld

查看状态

 systemctl status firewalld或者 firewall-cmd –state