The Splunk Add-on for Cisco ASA allows a Splunk software administrator to map Cisco ASA devices events to the Splunk CIM. You can then use the data with other Splunk apps, such as Splunk Enterprise Security and the Splunk App for PCI Compliance. Note: As of version 4.0.0 of the Splunk Add-on for Cisco ASA, Splunk does not support PIX and FWSM source types Docs: https://docs.splunk.com/Documentation/AddOns/released/CiscoASA/Description