Since I'm using RHEL 7.2, I am issuing the commands
$ systemctl disable firewalld
$ service firewalld stop
Obviously leaving the firewall open poses a security risk. After I complete my Ambari setup and installation, and assuming I'm running all the services that I want to be there, can I enable then the firewall again without affecting Ambari? If enabling it affects Ambari's functioning, what can be done to get the firewall up again and still keep Ambari working smoothly.