Wednesday, December 23, 2020

Security Onion ISO image now available featuring Zeek 3.0.11, Suricata 5.0.5, Snort, Elastic 7.9.3, and more!

First, please note that Security Onion 16.04 reaches EOL in less than 4 months:

Instead of downloading this ISO image, most users should be downloading the new Security Onion 2:

Our Security Onion ISO image is now available! This will most likely be the last Security Onion 16.04 ISO image!

Security Onion Boot Menu

Major Changes Since Last 16.04 ISO Image

  • Zeek 3.0.11
  • Suricata 5.0.5
  • Snort
  • Elastic 7.9.3


Thanks to Chris Morgret for testing this ISO image!

Package Updates

This release also includes the following updated packages:

pinguybuilder - 20180514-1ubuntu1securityonion25

These packages resolve the following issues:

pinguybuilder: increment version to #1805

Issues Resolved

For a list of all issues resolved in this release, please see:

Release Notes

For more information about this release, please see:

Installation Guide

We've updated the Installation guide to reflect the download locations for the new Security Onion 16.04 ISO image:

Existing Deployments

If you have existing Security Onion 16.04 installations, there is no need to download the new ISO image.  You can simply continue using our standard update process to install updated packages as they are made available:


You can find our documentation for Security Onion 16.04 here:


Need support for Security Onion 16.04?  Please see:


Security Onion Solutions is the only official authorized training provider for Security Onion.  For more information about our training classes, please see:

Hardware Appliances

We know Security Onion's hardware needs, and our appliances are the perfect match for the platform. Leave the hardware research, testing, and support to us, so you can focus on what's important for your organization. Not only will you have confidence that your Security Onion deployment is running on the best-suited hardware, you will also be supporting future development and maintenance of the Security Onion project!


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