Firewalld

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firewalld-structure+nftables.png

Firewalld is the default firewall management tool on the RHEL and Fedora distributions.

Firewalld is integrated into Meza

To get status, just

systemctl status firewalld
# or 
sudo firewall-cmd --state
sudo firewall-cmd --list-all-zones
sudo firewall-cmd --get-default-zone
sudo firewall-cmd --get-active-zones
sudo firewall-cmd --list-ports [zone]
80/tcp 443/tcp 1936/tcp

Then to add a port

firewall-cmd --add-port=9201/tcp
# test to see if it works
firewall-cmd --permanent --add-port=9201/tcp