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How to Open firewall port on CentOS 7

On Terminal

Logged in as root.

Run the following command.

firewall-cmd --zone=public --add-port=2888/tcp

Note this doesnot survive Reboots. Here is How to configure open firewall ports that survive Reboots.

Start by finding your active zones by running the following command.


firewall-cmd --get-active-zones


If the Zone is Public run the following:


firewall-cmd --zone=public --add-port=2888/tcp --permanent

firewall-cmd --reload

(for public active zone)


If its a different zone run the following.

firewall-cmd –zone=dmz –add-port=2888/tcp –permanent


Enjoy Server Administration.


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