CentOS防火墙配置
systemctl status firewalld
firewall-cmd --state
service firewalld start
service firewalld restart
service firewalld stop
firewall-cmd --list-all
firewall-cmd --query-port=8080/tcp
firewall-cmd --permanent --add-port=3306/tcp
firewall-cmd --permanent --remove-port=3306/tcp
firewall-cmd:是linux提供的操作firewall的一个工具 –permanent:表示设置为持久 –add-port:标识添加的端口
/etc/firewalld/zones/public.xml