How to Secure Splunk Enterprise and ES? Any recommendation, Steps are appreciated

[SamHTexas]

Please advise on how to secure the Splunk Enterprise plus the Splunk Enterprise Security (ES) individually ? I have already prepared BU / DR documents for both. Thank u in advance

[codebuilder]

The following documentation should cover everything you need to know.

https://docs.splunk.com/Documentation/Splunk/8.2.1/Security/Hardeningstandards