List of ports need to open Standalone/distributed TCP/8089, TCP/8000, TCP/8065, TCP/8191,TCP/9997 Cluster env SHC TCP/8081, TCP/9887, TCP/8181 Indexer cluster TCP/8080, TCP/9887 HF-> HEC TCP/8088 please check below link Components and their relationship with the network - Splunk Documentation
... View more