Getting Data In

What Windows Event Codes are generally acceptable to filter out?

jones4bob
Explorer

Is there a good reference list or someone that can post what ways Windows Event Logs are being filtered? I'm particularly interested in those from a security perspective. For example, I get a flood of successful logins on an IIS web server from the IUSR account, which is of little value to me.

1 Solution

BunnyHop
Contributor

You can filter using multiple values or one value.

See this answer for an example: http://answers.splunk.com/questions/577/how-do-you-filter-windows-event-log

I filter out EventCodes that are irrelevant. This site gives you a down and dirty look at WindowsEventLog:

http://www.ultimatewindowssecurity.com/securitylog/encyclopedia/default.aspx

The webinars in the site are pretty helpful as well. Once you've built your list of events to filter, apply them on your splunk instance.

View solution in original post

chaker
Contributor

Splunk 6 makes this easier now with blacklists for windows inputs.

[WinEventLog:Security]
disabled = false
blacklist = 5156-5157

It also makes suppressing the message payload much easier.

[WinEventLog:Security]
disabled = 0
suppress_text = 1

http://blogs.splunk.com/2013/10/14/windows-event-logs-in-splunk-6/

0 Karma

denisevw
Path Finder

This does not work on Universal Forwarders, correct?

0 Karma

BunnyHop
Contributor

You can filter using multiple values or one value.

See this answer for an example: http://answers.splunk.com/questions/577/how-do-you-filter-windows-event-log

I filter out EventCodes that are irrelevant. This site gives you a down and dirty look at WindowsEventLog:

http://www.ultimatewindowssecurity.com/securitylog/encyclopedia/default.aspx

The webinars in the site are pretty helpful as well. Once you've built your list of events to filter, apply them on your splunk instance.

Get Updates on the Splunk Community!

Index This | What did the zero say to the eight?

June 2025 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with this month’s ...

Splunk Observability Cloud's AI Assistant in Action Series: Onboarding New Hires & ...

This is the fifth post in the Splunk Observability Cloud’s AI Assistant in Action series that digs into how to ...

Now Playing: Splunk Education Summer Learning Premieres

It’s premiere season, and Splunk Education is rolling out new releases you won’t want to miss. Whether you’re ...