==Is the firewall running==
<code>
firewall-cmd --state
</code>
==Show default zone==
<code>
firewall-cmd --get-default-zone
</code>
==list current settings==
<code>
firewall-cmd --list-all
</code>
==open port in firewall==
<code>
firewall-cmd --zone=public --add-port=5000/tcp
</code>
==open application in firewall(http)==
<code>
firewall-cmd --zone=public --add-service=http
</code>
==close port in firewall==
<code>
firewall-cmd --zone=public --remove-port=5000/tcp
</code>
==close application in firewall(http)==
<code>
firewall-cmd --zone=public --remove-service=http
</code>
==making permanent==
Add the option <code>--permanent</code> to the //add/////remove// commands above. 
==list active zones==
<code>
firewall-cmd --get-active-zones
</code>
==list all zones==
<code>
firewall-cmd --list-all-zones
</code>