linux-防火墙

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：

W

**重启防火墙命令：**

firewall-cmd –reload 或者 service firewalld restart

查看放行端口：

 
firewall-cmd --list-ports
 

**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

防火墙放行某个端口

firewall-cmd --add-port=9999/tcp  #临时放行某端口号
 
firewall-cmd --add-port=9999/tcp --permanent #永久放行某端口号