1) All the Splunk Ports (8000 - Web, 8089 - Admin, 8065 - App Server, 9997 - TCP Inputs, 8191 - KV Store)
Since Hunk is a Hadoop Client node, you will also need to consider these Hadoop ports:
2) All the Hadoop Ports - this is a long list from Cloudera =
http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cm_ig_ports.html
2* ) Similar list but from Hortonworks =
http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.2.4/bk_HDP_Reference_Guide/content/reference_cha...