Splunk Search

Regex - find second match?

cfortune
Explorer

Was hoping I could get some help with extracting a field. I have a line that looks like:

"2010-10-08 16:04:10 0.0.0.0 21 3236 255.255.255.255 22821 2312 username 0 0 - 22 Back from VerifyPassword(user=username), bPasswordOK=1, iRetCode=0"

I want to extract the 255.255.255.255 as src_ip. I understand how to extract the field but I can't come up with a regex that extracts only that second IP address (as it's the source, first is the destination and is always the same, of course these are made up in this example. I don't have broadcast addresses logging into my server). I even downloaded regexbuddy but I still can't figure it out because I'm lame.

Any help would be greatly appreciated.

Tags (1)
1 Solution

dwaddle
SplunkTrust
SplunkTrust

I think this will work - this is in transforms.conf style:

[mylookup]
REGEX=\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} ([^\s]+) \d+ \d+ ([^\s]+)
FORMAT=src_ip::$2 dest_ip::$1

View solution in original post

dwaddle
SplunkTrust
SplunkTrust

I think this will work - this is in transforms.conf style:

[mylookup]
REGEX=\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} ([^\s]+) \d+ \d+ ([^\s]+)
FORMAT=src_ip::$2 dest_ip::$1

cfortune
Explorer

Worked. Thanks man! Very quick response too.

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: Matching cron expressions

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

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas

Why Splunk Customers Should Attend Cisco Live 2026 Las Vegas     Cisco Live 2026 is almost here, and this ...

Data Management Digest – May 2026

Welcome to the May 2026 edition of Data Management Digest!   As your trusted partner in data innovation, the ...