Splunk Enterprise Security

Why not getting Notables?

timsheets13
Loves-to-Learn

I'm new to ES.  I have taken the ES Admin course so I probably shouldn't have to ask for help but I'm pulling my hair out.

I have a linux host running sshd, no firewall.  This host has the universal forwarder sending events to the index cluster.

I have another linux host running a brute force attack against it.

Search in Splunk clearly shows the failed attempts, thousands of them.

In ES, I have enabled the "Brute Force Access Behavior Detected" correlation search, and added a Adaptive Response Action to create notable.

However, even though there are thousands of matching events, I never get a notable created.

SA_AccessProtection app is installed.

Any ideas of how to troubleshoot this, or what might be wrong greatly appreciated.

 

Labels (2)
Tags (1)
0 Karma

tscroggins
SplunkTrust
SplunkTrust

@timsheets13 

Does the "notable" index exist?

0 Karma

timsheets13
Loves-to-Learn

Yes, once I installed the TA_ForIndexers the indexes where all created.

I can create manual notables no problems.  And if I create an alert in Splunk and make the alert action to create a notable, that works.

However, attempting to create a notable based on a correlative search in ES is not working.

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Supercharging Windows Security Detection Performance: Introducing Hybrid Field ...

Windows event logs—from Security auditing and Sysmon to PowerShell script blocks—form the operational backbone ...

Enriching Signals with the OTel Lookup Processor

Introduction Raw telemetry is often incomplete. A log line might record an IP address, but what you really ...

Meet the .conf26 AI Agent Buildathon Winners

At the .conf26 AI Agent Buildathon, Splunk users turned their operational expertise into working AI agents ...