Log Integrity in Splunk

[lohit]

Hi,

We have a splunk distributed architecture (seperate instances for Search heads and indexers). I would like to know how to achieve integrity of logs stored in splunk indexer as if i am correct Features like 'IT block signing' and 'Event Hashing' doesnot work in distributd architecture.

Please help

[kristian_kolb]

You are partially correct. From the Securing Splunk manual;

http://docs.splunk.com/Documentation/Splunk/latest/Security/ITDataSigning

"Block signing is not supported for distributed search." 

http://docs.splunk.com/Documentation/Splunk/6.0/Security/Eventhashing

"You should use event hashing only if you don't have the capability to run Splunk's IT data block signing feature; individual event hashing is more resource intensive than data block signing.

Note: Event hashing is not available for cluster configurations. "

/K

[gcusello]

I need to be sure that logs are not modificed.
I have to use eventHashing instead Block Signing because Block Signing ins't supported with a distributed search.
I have one Search Head and two Indexers, Indexers are not clustered (because eventHashing doesn't work with clusters).
I waited for Search Head works with hashed events, instead I see events on Indexers but I don't see the same events on the Search Head.
Why this?

[lohit]

ok. thank you. I would like to know about archieving logs to AWS S3.Will the configuration of archival location in config files and steps listed in documentation for restoring logs back in Splunk will work for S3 ?

[kristian_kolb]

Aah, you said 'distributed architecture' in your question, and did not mention that the indexers were clustered. To answer your question; probably not. I have not tried it.

[lohit]

Kristian,

I have two indexers which are clustered together. So will event hashing work ?