All Apps and Add-ons

Snort field extractions not functioning

donaldwayne1975
Path Finder

Having issues with Splunk extracting the fields from Snort events being forwarded to Universal Forwarders. UF is configured to receive events on UDP 514 as soucetype=snort. The scenario is as follows:

Snort sensor--(sends event UDP 514)-->Splunk UF---(sends event TCP 9997)-->Splunk Indexers
Environment: Splunk v 7.3.1
Snort for Splunk is on the UF, SH, and Indexers.

Raw event

Sep 16 11:37:04 %REDACTED_IP% 2019-09-16T07:37:04.291385-04:00 SystemX ids_alerts - - [[email protected] msg="ET COMPROMISED Known Compromised or Hostile Host Traffic TCP group 1" pad2="0" appid="" impact="0" blocked="0" vlan-id="0" event-id="210" priority="2" protocol="6" sensor-id="SystemX" source-ip="%REDACTED_IP%" mpls-label="0" dport-icode="22" impact-flag="0" sport-itype="54974" event-second="1568633823" generator-id="1" signature-id="2500000" classification="Misc Attack" destination-ip="%REDACTED_IP%" sensor-interface="WAN Ethernet Port" classification-id="30" event-microsecond="302356" signature-revision="5175" _id="4904" _timestamp="2019-09-16 07:37:04.224183" _source="SystemX"] ET COMPROMISED Known Compromised or Hostile Host Traffic TCP group 1

Screenshot from Splunk of field extractions. Yes, verbose is set and app permissions are set to globally with all apps.

alt text
What am I doing wrong?

0 Karma

donaldwayne1975
Path Finder

event data was not in "true" snort format. data fields were cooked with different field names. had to create custom mappings to make it function properly.

0 Karma

donaldwayne1975
Path Finder

event data was not in "true" snort format. data fields were cooked with different field names. had to create custom mappings to make it function properly.

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!

Free Professional Services for .conf26 Attendees

This year at .conf26, we are doing something a little different. We are bringing the best minds from ...

Defend at Machine Speed: Your Guide to Security Sessions at .conf26

Splunk .conf26   With threats moving at machine speed and attack surfaces expanding across hybrid ...

Where Innovation Takes Flight: The Splunk4Aviation Flight Sim Lands at .conf26

If you hear someone at .conf26 shouting "gear down, GEAR DOWN" across the show floor, you have found us.  The ...