检查是否安装/查看状态
systemctl status firewalld
安装防火墙
yum install firewalld systemd -y
开启防火墙
systemctl start firewalld.service
关闭防火墙
systemctl stop firewalld.service
设置开机启动
systemctl enable firewalld.service
设置关闭开机启动
systemctl disable firewalld.service
查看端口列表
firewall-cmd --list-ports
开启端口
firewall-cmd --zone=public --add-port=80/tcp --permanent
关闭端口
firewall-cmd --zone=public --remove-port=80/tcp --permanent
查看端口
firewall-cmd --zone=public --query-port=80/tcp
载入配置
firewall-cmd --reload
