Linux firewalld commands

Examples of simple commands when configuring firewalld

sudo firewall-cmd --permanent --list-ports
sudo firewall-cmd --permanent --list-service
sudo firewall-cmd --permanent --list-all
sudo firewall-cmd --get-active-zones
sudo firewall-cmd --get-zone-of-interface=eth0

sudo firewall-cmd --permanent --zone=public --add-port=8080/tcp
sudo firewall-cmd --permanent --zone=public --remove-port=8080/tcp

sudo firewall-cmd --permanent --zone=public --add-service=http
sudo firewall-cmd --permanent --zone=public --remove-service=http

sudo firewall-cmd --permanent --zone=public --add-service=openvpn
sudo firewall-cmd --permanent --zone=public --remove-service=openvpn

sudo firewall-cmd --reload

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