[TOC] > Centos7關閉防火墻時遇到的錯誤Failed to start firewalld.service: Unit not found. Unit firewalld.service could no ## Centos7關閉防火墻 在centos上想要關閉防火墻,查了一些博客,執行命令 ~~~powershell systemctl status firewalld.service ~~~ 時報錯Unit firewalld.service could not be found. 然后查了很多資料都說執行下面這個就解決了 ~~~powershell systemctl unmask firewalld.service ~~~ 然而又報錯了 Failed to start firewalld.service: Unit not found. 太頭疼了,百度千篇一律的答案始終無法解決, 最后終于找到問題 其實就是要排除你們是否安裝了這個firewalld ~~~powershell yum install firewalld systemctl unmask firewalld systemctl enable firewalld systemctl start firewalld ~~~ 依次執行以上命令后發現終于ok了 其他命令 ~~~powershell systemctl start firewalld.service //開啟防火墻 systemctl stop firewalld.service //關閉防火墻 systemctl enable firewalld.service //設置開機自動啟動 systemctl disable firewalld.service //設置關閉開機制動啟動 firewall-cmd --reload //在不改變狀態的條件下重新加載防火墻 ~~~ ## [防火墻firewalld報錯：ERROR: Exception DBusException: org.freedesktop.DBus.Error.AccessDenied:...](https://www.cnblogs.com/cpw6/p/12050800.html) 重啟dbus服務：systemctl restart dbus 再重啟firewalld