start-up
service firewalld startrestart
service firewalld restartclose
service firewalld stopCheck the status
service firewalld statusPower on Disabled
systemctl disable firewalldPower on enable
systemctl enable firewalldOpen ports
firewall-cmd --permanent --add-port=22/tcpRemove port
firewall-cmd --permanent --remove-port=22/tcpLook at the open ports
firewall-cmd --list-portsOnly... Can be specified ip Access the specified port
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="172.16.1.100" port protocol="tcp" port="1521" accept"remove
firewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="172.16.1.100" port protocol="tcp" port="1521" accept"View the currently active configuration
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