我的防火牆目前處於非活動狀態。如何在Centos 7上啓用防火牆?
# systemctl status firewalld
firewalld.service
Loaded: masked (/dev/null)
Active: inactive (dead)
我用下面的命令來啓用防火牆
$systemctl unmask firewalld
,但我得到這個錯誤
# systemctl unmask firewalld
Failed to issue method call: Access denied
請指教。
提前致謝!
這是offtopic,應該在另一個StackExchange網站如[ServerFault]提交(http://serverfault.com/) –