之前用的iptables来管理的防火墙,后来发现centOS7.0中已经用firewalld取代iptables了,于是与时俱进,停用了iptables. systemctl stop iptables.service 然后来启动firewalld吧 systemctl start firewalld.service 给我报了这个错 Failed to start firewalld.service: Unit firewalld.service is masked. 查了很久没找到解决办法,于…