linux centos 防火墙操作命令
####################Centos7.X################### #### mail:ratelcloud@foxmail.com #### system:centos7.x firewall1.启用防火墙 systemctl enable firewalld.service systemctl start firewalld.service2.查询防火墙状态 firewall-cmd --state3.重新加载防火墙 firewall-cmd --reload4.开启指定端口 firewall-cmd --zone=public --add-port=3306/tcp --permanent5.查询端口开通状态 firewall-cmd --query-port=3306/tcp6.关闭以开放的端口 firewall-cmd --zone=public --remove-port=3306/tcp --permanent7.查询已开放的端口列表
