Splunk Search

Is it possible to create a data model lookup attribute that is based on a CSV file that contains a name column and a CIDR column?

yacht_rock
Explorer

Is it possible to create a data model lookup attribute that is based on a CSV file that contains a name column and a CIDR column?

Example file

environment, cidr
foo, 123.123.123/24
bar, 321.321.321/24

So I can match a source IP or a destination IP against the CIDR to get the "environment" name? Creating two fields like source_environment and destination_environment

0 Karma
1 Solution

lguinn2
Legend

Lookups are defined in transforms.conf. This is an example of the configuration that you need.

transforms.conf

[mylookup]
filename = ../lookups/thefilename.csv
max_matches = 1
min_matches = 1
default_match = Unknown
match_type = CIDR

And the search could be

yoursearchhere
| lookup mylookup dest_IP as cidr OUTPUT environment as destination_environment
| lookup mylookup source_IP as cidr OUTPUT environment as source_environment

HTH!

View solution in original post

0 Karma

lguinn2
Legend

Lookups are defined in transforms.conf. This is an example of the configuration that you need.

transforms.conf

[mylookup]
filename = ../lookups/thefilename.csv
max_matches = 1
min_matches = 1
default_match = Unknown
match_type = CIDR

And the search could be

yoursearchhere
| lookup mylookup dest_IP as cidr OUTPUT environment as destination_environment
| lookup mylookup source_IP as cidr OUTPUT environment as source_environment

HTH!

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!

[Puzzles] Solve, Learn, Repeat: Character substitutions with Regular Expressions

This challenge was first posted on Slack #puzzles channelFor BORE at .conf23, we had a puzzle question which ...

Splunk Community Badges!

  Hey everyone! Ready to earn some serious bragging rights in the community? Along with our existing badges ...

[Puzzles] Solve, Learn, Repeat: Matching cron expressions

This puzzle (first published here) is based on matching timestamps to cron expressions.All the timestamps ...