Splunk Search

Field extraction for IP ADFS Logs

donaldmayo
New Member

Hello,

I found one post but the REGEX search didn't work. How would I extract the IP into a new field that comes after http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-forwarded-client-ip. For example, here's the actual log:

10/24/2018 11:09:33 AM
LogName=Security
SourceName=AD FS Auditing
... 8 lines omitted ...
OpCode=Info
... 5 lines omitted ...

Caller identity:
http://schemas.microsoft.com/ws/2008/06/identity/claims/groupsid
... 6 lines omitted ...
S-1-5-21-1869490827-231744046-782984527-6480
http://schemas.microsoft.com/ws/2008/06/identity/claims/groupsid
S-1-5-21-1869490827-231744046-782984527-5748
http://schemas.microsoft.com/ws/2008/06/identity/claims/groupsid
S-1-5-21-3559849827-2309094810-816736563-404642
http://schemas.microsoft.com/ws/2008/06/identity/claims/groupsid
S-1-5-21-2029530193-91048431-1849977318-34517
http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-forwarded-client-ip
99.203.16.212
http://schemas.microsoft.com/ws/2008/06/identity/claims/windowsaccountname
DOMAIN\johndoe
http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn
johndoe@johndoe.com

I'm looking to extract any IP after that x-ms-forwarded-client-ip string.

Thank you!

Tags (1)
0 Karma

Vijeta
Influencer

Try this

|rex field=_raw "x-ms-forwarded-client-ip\s+(?<ip>\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3})"
0 Karma
Get Updates on the Splunk Community!

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 ...

Unlock Database Monitoring with Splunk Observability Cloud

  In today’s fast-paced digital landscape, even minor database slowdowns can disrupt user experiences and ...