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I'd like to discuss firewalld on atomic host. Recently I was trying to
figure out the best way to explain to other users how to set firewall rules
on atomic host.
Usually I would say add your rules and then iptables-save, but on Atomic
Host docker has added it's firewall rules in there dynamically so if you iptables-save
you'll get a bunch of stuff that you don't want in your static configuration.
There are ways around this; manually create your config file, or use iptables-save
and then rip the docker stuff out. Either way it's a bit of a pain. I think
firewalld would make this easier on the user. Not sure of the pro/con ratio though.