Splunk Search

IP Range Lookup

splunkrocks2014
Communicator

I have IP lookup table (ips.csv) mixed with different types of formats such as

ip
-----------------------
192.168.1.0/24
192.168.2.0-192.168.2.36
192.168.3.3

From transforms.conf, I defined a ip_lookup object as the following:

 [ip_lookup]
 filename = ips.csv
 match_type = CIDR(ip)

Does my lookup work with single IP or a IP range like this, 192.168.2.0-192.168.2.36?

Thanks.

Tags (1)
1 Solution

starcher
Influencer

cidr lookups have to be in /mask format. if the line is a single IP it should be 192.168.3.3/32

View solution in original post

adonio
Ultra Champion

can you elaborate? what is the problem you are trying to solve?

0 Karma

splunkrocks2014
Communicator

I got the answer from starcher. Thank you for asking.

0 Karma

starcher
Influencer

cidr lookups have to be in /mask format. if the line is a single IP it should be 192.168.3.3/32

splunkrocks2014
Communicator

Thank you starcher. This is what I am looking for.

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!

Modernize your Splunk Apps – Introducing Python 3.13 in Splunk

We are excited to announce that the upcoming releases of Splunk Enterprise 10.2.x and Splunk Cloud Platform ...

Step into “Hunt the Insider: An Splunk ES Premier Mystery” to catch a cybercriminal ...

After a whole week of being on call, you fell asleep on your keyboard, and you hit a sequence of buttons that ...

SplunkTrust Application Period is Officially OPEN!

It's that time, folks! The application/nomination period for the 2026-2027 SplunkTrust is officially open. If ...