firewall - 如何在Centos 7上启用防火墙？

Question

我的防火墙当前处于非事件状态。

# systemctl status firewalld
firewalld.service
    Loaded: masked (/dev/null)
    Active: inactive (dead)

我使用以下命令启用防火墙

$systemctl unmask firewalld

但是我收到了这个错误

# systemctl unmask firewalld
Failed to issue method call: Access denied

请指教。

提前致谢!

Answer 1

试试这个:

systemctl unmask firewalld

return: Removed symlink /etc/systemd/system/firewalld.service.

之后，您可以:

systemctl restart firewalld