[Centos7] Unable to run firewall-config
I have done from virtualbox console (not putty):
yum groupinstall "x window system"
firewall-config, but I'm not able to start this GUI:
[root@server ~]# firewall-config
** (firewall-config:4581): WARNING **: Could not open X display
(firewall-config:4581): Gtk-WARNING **: cannot open display:
[root@server ~]# xclock
Error: Can't open displ
Can you help me to fix this? I would like to be able to use firewall GUI instead of difficult firewall-cmd tool.