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CEF Extraction Add-on for Splunk

This app is NOT supported by Splunk. Please read about what that means for you here.
This add-on provides transforms for CEF headers and key/values extraction for extractling custom strings (useful for dealing with Arcsight logs)

CEFUtils - Common Event Format Extraction Utilities Add-on for Splunk Enterprise

The common event format is an event exchange syntax. A sample message formatted as CEF looks as follows:
CEF:0|Splunk|Test|1.0|signature:2|Test event|5|src_addr= dest_addr= src_port=32122 dest_port=80
It consists of a common prefix that always has to be present, followed by a flexible key-value extension.

In order to parse CEF data correctly in Splunk, this add-on provides 4 transforms:
* cefHeaders - use it to extract CEF headers
* cefKeys - fixes multiword value extraction (by default Splunk would only extract key's values up to the first whitespace character)
* cefLabelBeforeKey - for custom field mapping, replacement for deprecated 'cefkv' command.
* cefLabelAfterKey - for custom field mapping, replacement for deprecated 'cefkv' command


cefLabelBeforeKey and cefLabelAfterKey transforms will extract key-value pair custom_label="custom string value" from the following CEF event:
CEF:0|Splunk|Test|1.0|signature:2|Test event|5|cs1=custom string value cs1Label=custom label

Installation in the Distributed Deployment

The add-on provides configurations that are used both at index time and at search time, so if you are installing the add-on in the distributed deployment you'll need to install it on the instances running the Parsing Pipeline (Heavy Forwarders or Indexers/Peers) and on the Search Heads.


See props.conf example supplied with the app


This add-on is partially based on "Common Event Format - Field Extractions" by raffy and "jsonutils" by vbumgarner


This is an opensource project. No support provided. Public repository available on https://github.com/igsher/cefutils">GitHub

Release Notes:

* Added eventgen.conf to generate sample data for app tesing. To be used with https://splunkbase.splunk.com/app/1924/">Eventgen app

* Added cefLabelBeforeKey,cefLabelAfterKey transforms
* Deprecated cefkv command

Release Notes

Version 1.5.4
June 28, 2018
  • Added eventgen.conf to generate sample data for app tesing. To be used with Eventgen app

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