centOS7 防火墙

禁用防火墙

 systemctl stop firewalld.service
 systemctl disable firewalld.service
 systemctl status firewalld.service

启动一个服务：systemctl start firewalld.service
关闭一个服务：systemctl stop firewalld.service
重启一个服务：systemctl restart firewalld.service
显示一个服务的状态：systemctl status firewalld.service
在开机时启用一个服务：systemctl enable firewalld.service
在开机时禁用一个服务：systemctl disable firewalld.service
查看服务是否开机启动：systemctl is-enabled firewalld.service;echo $?
查看已启动的服务列表：systemctl list-unit-files|grep enabled

开放centOS7 端口号

##Add  
firewall-cmd --permanent --zone=public --add-port=8080/tcp  
##Reload  
firewall-cmd --reload  
##检查是否生效  
firewall-cmd --zone=public --query-port=8080/tcp