Splunk Search

REGEX for authentication logs

hartfoml
Motivator

I have authentication logs like below:

,AUTHN_METHOD_FOO,123!@#123!@#123!@#asdfgdvfd,123!@#123!@#123!@#asdfgdvfd,123!@#123!@#123!@#asdfgdvfd,123!@#123!@#123!@#asdfgdvfd,username,FIRST,LAST,

I want to use regex to build transform for a field called username and first and last

I had this but it didn't work

rex "(?i)AUTHN_METHOD_*+,*+,*+,*+,*+,(?P<username>[^,]+)"

Any help would be great!!!

Tags (1)
0 Karma
1 Solution

somesoni2
Revered Legend

Try this

rex "(?i)AUTHN_METHOD_\w+,.*,(?<username>[^,]+),(?<first>[^,]+),(?<last>[^,]+)"

View solution in original post

somesoni2
Revered Legend

Try this

rex "(?i)AUTHN_METHOD_\w+,.*,(?<username>[^,]+),(?<first>[^,]+),(?<last>[^,]+)"

hartfoml
Motivator

Thanks, I have a problem becasue the \w+ could be one work or several like this "SUCCESS_TEMPORARY_FIXED_TOKENCODE" and the .* for the 4 sets of guid numbers seems odd

0 Karma
Get Updates on the Splunk Community!

AI for AppInspect

We’re excited to announce two new updates to AppInspect designed to save you time and make the app approval ...

App Platform's 2025 Year in Review: A Year of Innovation, Growth, and Community

As we step into 2026, it’s the perfect moment to reflect on what an extraordinary year 2025 was for the Splunk ...

Operationalizing Entity Risk Score with Enterprise Security 8.3+

Overview Enterprise Security 8.3 introduces a powerful new feature called “Entity Risk Scoring” (ERS) for ...