Splunk Search

Excluding rows based on field combination

jbdumoulin
Engager

Hello splunkers !

Today I'm building a report, in which I'm tasked to exclude some specific results. These are typical windows authentication logs.
I have certain IP's, and logon type, which when they match should be excluded.

For instance, let's say I have an authentication from IP 195.16.108.1 and a logon type 4, I must exclude it from the report. But I can't specify in my alert

ip="195.16.108.1" AND logon_type!=4

That would only select IP 195.16.108.1 while I want to keep every IP, except 195.16.108.1 when logon type equals 4.

I found a solution with the eval function :

 ... request ...|   eval exclude=if(( ip="195.16.108.1" AND logon_type="4"), "true", "false")) | where exclude!="true" | ... do some formating ...

I wonder then : isn't there another solution to my problem ? Because this one sounds counter intuitiv, having to create a new field with a specific value only to sort which row to keep and which ones to exclude.

Tags (2)
0 Karma
1 Solution

gcusello
SplunkTrust
SplunkTrust

Hi jbdumoulin,
try to use parenthesis:

index=my_index NOT (ip="195.16.108.1" logon_type=4)
| ...

Bye.
Giuseppe

View solution in original post

gcusello
SplunkTrust
SplunkTrust

Hi jbdumoulin,
try to use parenthesis:

index=my_index NOT (ip="195.16.108.1" logon_type=4)
| ...

Bye.
Giuseppe

jbdumoulin
Engager

Thanks, really simple solution indeed.

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!

Quantify Your Splunk Investment Impact: Introducing Savings Metrics to Value Insights

Building on the foundation established in our initial Value Insights releases, we are introducing the Savings ...

Event Series: Telemetry Pipeline Management

Balancing Scale and Spend: Gaining Control Over High-Volume Metrics in Splunk Observability Cloud As ...

Kick the Tires Before You Commit: A Hands-On Tour of the Splunk Observability Cloud ...

Evaluating an enterprise observability platform usually goes like this: fill out a form, get a free trial with ...