Splunk Search

anonymized data

gregwilliams
Path Finder

We are conducting a study in our organization surrounding productivity and user behavior. Currently I'm receiving all firewall logs which is logging all user activity. The people who are conducting the study want to see traffic for one week and then send out an email reminding them to only use the internet for business purposes. This data needs to be anonymized, but not completely anonymized.

I am using sed to replace src=111.222.333.444 with src=############, but was wondering if there is anyway to replace the src=111.222.333.444 with something isn't completely randomized, for example, change the 444 into aaa so we can track whether or not productivity increases and random traffic decreases after we send the nice email out.

Tags (2)

Ron_Naken
Splunk Employee
Splunk Employee

This should change the last octet to aaa for an IP address:

| rex field=src mode=sed "s/(\d+\.)(\d+\.)(\d+\.)(\d+)/\1\2\3aaa/g"
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!

Deep Dive: Accelerate threat investigation with Splunk’s AI Assistant in Security

AI is one of the biggest topics in the market today, and for security teams, its value goes far beyond the ...

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...

Detection Engineering Office Hours: Real-World Troubleshooting & Q&A

[REGISTER HERE] This thread is for the Community Office Hours session on Detection Engineering Office Hours: ...