list ports
firewall-cmd --list-all
open port port/tcp or port/upd
firewall-cmd --permanent --add-port=20/tcp
firewall-cmd --permanent --add-port=21/tcp
firewall-cmd --permanent --add-port=22/tcp
firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --permanent --add-port=6800/tcp
firewall-cmd --permanent --add-port=7050-7100/tcp
firewall-cmd --permanent --add-port=8000/tcp
firewall-cmd --permanent --add-port=12621/tcp
firewall-cmd --permanent --add-port=20002/tcp
firewall-cmd --permanent --add-port=20003-20020/tcp
firewall-cmd --permanent --add-port=12443/tcp
firewall-cmd --permanent --add-port=8888/tcp
reload
firewall-cmd --reload
show new
firewall-cmd --list-ports