STIG stands for Security Technical Implementation Guide. For more information about STIGs, please see


This is an enterprise-level feature of Security Onion. Contact Security Onion Solutions, LLC via our website at for more information about purchasing a Security Onion Pro license to enable this feature.

Enabling STIG During the ISO Install

The recommended way to use STIG with Security Onion is to install via our Security Onion ISO image. At the ISO boot menu, you’ll need to modify the boot command. This can be done using the e key in UEFI boot mode or the Tab key in BIOS boot mode before it automatically boots. Then append stig=1 (and possibly other options like FIPS and LUKS) to the boot parameters and continue the boot process.