Installing FirewallD CentOS 7
yum install firewalld -y systemctl status iptables systemctl stop iptables systemctl mask iptables systemctl start firewalld systemctl enable firewalld.service systemctl status firewalld
NTP:
firewall-cmd --add-service=ntp --permanent firewall-cmd --reload
XYMon:
firewall-cmd --zone=public --add-port=1984/tcp --permanent firewall-cmd --reload
MariaDB Galera Cluster:
http://galeracluster.com/documentation-webpages/firewallsettings.html
firewall-cmd --zone=public --add-service=mysql --permanent firewall-cmd --zone=public --add-port=3306/tcp --permanent firewall-cmd --zone=public --add-port=4567/tcp --permanent firewall-cmd --zone=public --add-port=4568/tcp --permanent firewall-cmd --zone=public --add-port=4444/tcp --permanent firewall-cmd --zone=public --add-port=4567/udp --permanent firewall-cmd --reload
HTTP(s):
firewall-cmd --zone=public --add-port=80/tcp --permanent firewall-cmd --zone=public --add-port=443/tcp --permanent firewall-cmd --zone=public --add-port=80/udp --permanent firewall-cmd --zone=public --add-port=443/udo --permanent firewall-cmd --reload
PaceMaker High-Availability:
firewall-cmd --permanent --add-service=high-availability firewall-cmd --reload