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DDoS Detector for Splunk

Splunk Cloud
This App relies on flow data processed by NetFlow Optimizer™ (NFO) and provides alerting and visualization capabilities for distributed denial-of-service (DDoS) attacks detected and reported to Splunk® by NFO DDoS Detector Module.

The operators benefit from being able to address traffic anomalies and DDoS attacks before network devices and servers targeted by DDoS are incapacitated.

Use this App to setup and receive email alerts within minutes after a DDoS attack is detected. Select the detection confidence level for notifications to reduce false positives. View details of the anomaly, and/or browse through the history of detected attacks, searching for common origins and victims.

Start Your NFO Free Trial by registering at https://www.netflowlogic.com/download/

This App relies on flow data processed by NetFlow Optimizer (NFO) and sent to Splunk in syslog format.


The DDoS Detector for Splunk App and Technology Add-on for NetFlow are designed to work together. To download Add-on please visit https://splunkbase.splunk.com/app/1838/

To download NFO please visit https://www.netflowlogic.com/downloads/

Contact trials@netflowlogic.com and request DDoS Detector Module for NFO.

This Module consists of six independent components, which we call experts, each specializing in its own domain of knowledge. All experts process all the flow records received by NetFlow Optimizer, apply their own analytics, and, if an attack is detected, send messages to the events correlator, indicating the type of detected attack, confidence level, and a trend of the event characteristics dynamics (increasing, steady, or abating). The event correlator combines the information received from the experts, assigns weight to each reported event, and makes a final determination on reporting and its confidence in event validity.

Where to install

Install DDoS Detector Splunk App and Technology Add-on for NetFlow.

Splunk Node What to install
Search Head Add-on and App
Indexer Add-on only
Heavy Forwarder Add-on only
Universal Forwarder None

Install NFO on a spate server or VM. You can also install Splunk HF or UF together with NFO.

Post Installation Steps

Please follow the steps described on Setup page of the App.

NetFlow Optimizer
Upload DDoS Detector Module into NFO and enable it.

Please contact splunk_team@netflowlogic.com if you have questions or need assistance.

Release Notes

Version 1.1.44
Sept. 8, 2021
  • Updated for Splunk Cloud Compatibility (jQuery 3.5)

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