Add a new custom zone to firewalld

Run the following command to add a new custom zone with name tunnel.Note that the command is only supported with the –permanent parameter.

root@host:~# firewall-cmd --permanent --new-zone=tunnel
success
root@host:~#

Reload the firewalld configuration to activate the changes:

root@host:~# firewall-cmd --reload
success
root@host:~#