一、防火墙的开启、关闭、禁用命令
(1)设置开机启用防火墙:systemctl enable firewalld.service
(2)设置开机禁用防火墙:systemctl disable firewalld.service
(3)启动防火墙:systemctl start firewalld
(4)关闭防火墙:systemctl stop firewalld
(5)检查防火墙状态:systemctl status firewalld
二、使用firewall-cmd配置端口
(1)查看防火墙状态:firewall-cmd --state
(2)重新加载配置:firewall-cmd --reload
(3)查看开放的端口:firewall-cmd --list-ports
(4)开启防火墙端口:firewall-cmd --zone=public --add-port=9200/tcp --add-port=8080/tcp --permanent
(5)关闭端口命令:firewall-cmd --zone= public --remove-port=80/tcp --permanent
(6)查看端口是否打开:firewall-cmd --zone= public --query-port=80/tcp
(7)关闭防火墙端口:firewall-cmd --zone=public --remove-port=8080/tcp --permanent