This blog post provides the definitive answer to all questions regarding SSL usage in the Splunk Enterprise product suite. The blog describes every possible SSL configuration in the Splunk configurations and helpful tips and tricks. With the release of Splunk 9.0 on June 14, 2022, new configuration options were introduced. The configuration that only applies to Splunk versions after 9.0 are prefixed with an according prefix.

A huge thank you goes to Duane Waddle & George Starcher for their .conf 2015 talk Best Practices for Splunk SSL (TheSSLippery Slope Revisited) that served as a reference book for all things SSL for many years.