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!

Index This | What travels the world but is also stuck in place?

April 2026 Edition  Hayyy Splunk Education Enthusiasts and the Eternally Curious!   We’re back with this ...

Discover New Use Cases: Unlock Greater Value from Your Existing Splunk Data

Realizing the full potential of your Splunk investment requires more than just understanding current usage; it ...

Continue Your Journey: Join Session 2 of the Data Management and Federation Bootcamp ...

As data volumes continue to grow and environments become more distributed, managing and optimizing data ...