Description of problem: RHCS installation guide MDS firewall should be a range 6800-7300 https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/3/html-single/installation_guide_for_red_hat_enterprise_linux/index#configuring-a-firewall-for-red-hat-ceph-storage-install Version-Release number of selected component (if applicable): RHCS 3.2