LIST ALL ZONES:

[root@ system]# firewall-cmd --get-zones
block dmz drop external home internal public trusted work

each zone has an *.xmo file in /etc/firewalld/zones

QUERY DEFAULT ZONE:

[root@ system]# firewall-cmd --get-default-zone
public

GET ACTIVE ZONES:

[root@ system]# firewall-cmd --get-active-zones
[root@ system]#

MOVE AN EXSITING ZONE TO A DIFFERENT INTERFACE:

[root@ system]# firewall-cmd --zone=internal --change-interface=eth0

LIST AVAILABLE PREDEFINED SERVICES:

[root@ system]# firewall-cmd --get-services
RH-Satellite-6 amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn   pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https

STANDARD PORTS NEEDED:

[root@ system]# firewall-cmd --zone=public --add-service=ssh --permanent
success
[root@ system]# firewall-cmd --zone=public --add-service=http --permanent
success
[root@ system]# firewall-cmd --zone=public --add-service=https --permanent
success
[root@ system]# firewall-cmd --zone=public --add-service=https --permanent
success

TEAMPEAK STUFF / Custom Ports and Protocols:

[root@ system]# firewalld-cmd --permanent --zone=public --add-port=9987/udp
success
[root@ system]# firewalld-cmd --permanent --zone=public --add-port=30033/tcp
success
[root@ system]# firewalld-cmd --permanent --zone=public --add-port=10011/tcp 
success

RELOAD THE RULES:

[root@ system]# firewall-cmd --reload
[root@ system]# success