Centos Firewall Source Rule Creation

This is useful for protecting your elasticsearch cluster.  Something like graylog should be the only thing that is able to connect to it outside of the other elasticsearch nodes.

firewall-cmd --permanent --zone=public --add-rich-rule='rule family="ipv4" source address="192.168.5.1" port protocol="tcp" port="9300" accept'
firewall-cmd --reload