topic Disable TLS certificate for inter-Splunk communication in Splunk enterprise in Splunk Enterprise

Disable TLS certificate for inter-Splunk communication in Splunk enterprise

Eshwar — Mon, 05 Feb 2024 06:58:30 GMT

Hi Splunk experts,

We have Splunk enterprise which is running on Linux. Is there any option that we can disable or skip secure inter-splunk communication for REST APIs?

Please suggest me

Thank you in advance.

Regards,

Eshwar

Re: Disable TLS certificate for inter-Splunk communication in Splunk enterprise

batabay — Mon, 05 Feb 2024 07:59:58 GMT

Hi,

According to the documentation, you can do this, but it is strongly discouraged. In the correct scenario, it would be more sensible to use a signed certificate or perform SSL forwarding on a load balancer. I recommend against testing this in a production environment.

in $SPLUNK_HOME/etc/system/local/server.conf [sslConfig] enableSplunkdSSL = false

[sslConfig]
* Set SSL for communications on Splunk back-end under this stanza name.
  * NOTE: To set SSL (for example HTTPS) for Splunk Web and the browser,
   use the web.conf file.
* Follow this stanza name with any number of the following setting/value
  pairs.
* If you do not specify an entry for each setting, the default value
  is used.

enableSplunkdSSL = <boolean>
* Enables/disables SSL on the splunkd management port (8089) and KV store
  port (8191).
* NOTE: Running splunkd without SSL is not recommended.
* Distributed search often performs better with SSL enabled.
* Default: true

Re: Disable TLS certificate for inter-Splunk communication in Splunk enterprise

isoutamo — Mon, 05 Feb 2024 15:25:31 GMT

as already said by @batabay don't disable it. Even you are using Splunk's internal certs it's better than without it.

If you have issue to use that e.g. with cURL or other tools you could accept those cert within those command. Like "curl -k". Or other option (better) is just replace those Splunk's internal certs with official certs.

See https://docs.splunk.com/Documentation/Splunk/latest/Security/AboutsecuringyourSplunkconfigurationwithSSL and https://conf.splunk.com/files/2023/slides/SEC1936B.pdf

r. Ismo