防火墙firewall

安装

1.下载

yum install firewalld

2.启动

systemctl start firewalld # 启动,
systemctl enable firewalld # 开机启动
systemctl stop firewalld # 关闭
systemctl disable firewalld # 取消开机启动

使用

1.查看开放端口命令

firewall-cmd --list-ports

1. 添加开放端口

firewall-cmd --zone=public --add-port=5000/tcp --permanent  #对外网全部开放
firewall-cmd --zone=public --permanent --add-rich-rule ‘rule family=ipv4 source address=192.168.0.1/24 port port=22 protocol=tcp accept‘ #添加端口开放
firewall-cmd --permanent --remove-rich-rule ‘rule family=ipv4 source address=192.168.0.1/2 port port=5000 protocol=tcp accept‘ #删除端口开放

防火墙firewall

原文：https://www.cnblogs.com/anxminise/p/9650104.html