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firewall-cmd

The firewalld command line client.

  • View the available firewall zones:

firewall-cmd --get-active-zones

  • View the rules which are currently applied:

firewall-cmd --list-all

  • Permanently open the port for a service in the specified zone (like port 443 when in the public zone):

firewall-cmd --permanent --zone={{public}} --add-service={{https}}

  • Permanently close the port for a service in the specified zone (like port 80 when in the public zone):

firewall-cmd --permanent --zone={{public}} --remove-service={{http}}

  • Reload firewalld to force rule changes to take effect:

firewall-cmd --reload

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