linux网络相关操作 一、查看firewalld状态、关闭、开启、开机自动关闭、开机自动启动 [root@VM_0_12_centos ~]# systemctl status firewalld.service ● firewalld.service – firewalld – dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled) Active: inact