CentOS 7.0默认使用的是firewall作为防火墙
| 查看防火墙的状态 | systemctl status firewalld | 
|---|---|
| 关闭防火墙(临时,重启失效) | systemctl stop firewalld | 
| 启动防火墙 | systemctl start firewalld | 
| 重启防火墙 | firewall-cmd --reload | 
| 开机启动防火墙 | systemctl enable firewalld | 
| reboot 永久关闭防火墙 | systemctl disable firewalld | 
查看防火墙的状态
systemctl status firewalld
关闭防火墙(临时,重启失效)
systemctl stop firewalld
启动防火墙
systemctl start firewalld
开机启动防火墙
systemctl enable firewalld
reboot 永久关闭防火墙
systemctl disable firewalld
重启防火墙
firewall-cmd --reload