You can now open ports in the firewall, using port numbers or service
names:
[customizations.firewall]
ports = ["22:tcp", "80:tcp", "imap:tcp", "53:tcp", "53:udp"]
Or enable/disable services registered with firewalld:
[customizations.firewall.services]
enabled = ["ftp", "ntp", "dhcp"]
disabled = ["telnet"]
If the template contains firewall --disabled it cannot be overridden,
under the assumption that it is required for the image to boot in the
selected environment.
(cherry picked from commit 4d35668ab5)
(cherry picked from commit 9f1756cc27)
f39e965fb2