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For more information about IBM's Ideas program visit ibm.com/ideas.
In RHEL 7 firewalld is the preferred firewall solution. In the current CoreOS images for RHEL7 iptables is still in use.
Please change the CoreOS (and all scripting that depends on this) to use firewalld instead off iptables.
This statement could also be used for other enhanchements of RHEL7 like chrony en SE-Linux.
The CoreOS of recent versions of Linux should use the preferred solutions which are widely used by the community, like firewalld. Knowledge of legacy solutions like iptables will become less in the coming years. Also third party products will move to use this.
It is a good preactise to keep up with these news developments.
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