Splunk Search

regex help

mcbradford
Contributor

I need to filter out some events on the heavy forwarder. I know how to do this but I need some help with the regex.

If dstip=123.123.123.123 and dstport=514 and rule_name not ="this is my rule"

drop the events.

These are the events I want to see.......

Jan 31 04:09:39 gwz auditd: date="2012-01-31 09:09:39 +0000",fac=f_kernel_ipfilter,area=z_general_area,type=t_nettraffic,pri=p_major,hostname=abc.cbs.com,event="session end",app_risk=low,app_categories=infrastructure,netsessid=54c044f265c90,srcip=123.15.3.19,srcport=41868,srczone=internal,protocol=17,dstip=123.123.123.123,dstport=514,dstzone=dmz,bytes_written_to_client=0,bytes_written_to_server=136491133,rule_name="this is my rule",cache_hit=0,start_time="2012-01-30 09:02:08 +0000",application=Syslog

Tags (1)

jbsplunk
Splunk Employee
Splunk Employee

I did something similar for someone else on here today, and for you I think something like this would work:

 props.conf

 [yoursourcetype]
 TRANSFORMS-null = setnull

 transforms.conf

 [setnull]
 REGEX = dstip=123.123.123.123,dstport=514,.+,rule_name="this is my rule"
 DEST_KEY = queue
 FORMAT = nullQueue

Ayn
Legend

Well, what does the event you're trying to filter look like? The example you provided seems to refer just to field names, not to actual event text.

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!

Data Management Digest – August 2026

MichelleCorpora_1-1788182384472.png Welcome to the August 2026 edition of Data Management Digest! August was a ...

Your Feedback. Our Roadmap. Visit the PX Feedback Booth at .conf26

You use Splunk every day, come and help shape what's next.  Save Your Seat: Product-Focused Sessions at ...

Agentic SOC Triage: Investigating Splunk ES Notables with MCP Server and a Local LLM

The Problem: Too Many Alerts, Too Little Context Security operations teams running Splunk Enterprise Security ...