Thursday, January 18, 2024

Top 5 Reasons to Sign Up for our 4-day Security Onion Fundamentals for Analysts & Admins Class in March 2024

Security Onion Solutions has been teaching Security Onion classes since 2014. Since that time, we've taught students around the globe to help them peel back the layers of their enterprise and make their adversaries cry!

Our next class is in March. Why should you sign up? Here are the top 5 reasons!

1. Amazing instructors

Our instructors are not like other instructors that just read from a slide deck. Security Onion Solutions instructors have years of experience in threat hunting, enterprise security monitoring, and log management. They have worked in real-world operational security roles, engineered monitoring strategies and solutions, and handled real-world incidents. They bring their practical experience to the classroom, enabling students in both theory and hands-on application to hunt adversaries in environments large and small.

2. Comprehensive course material and labs

As a student, you will receive over 300 pages of course material filled with tips and tricks to help you peel back the layers of your enterprise and make your adversaries cry. That amazing content is reinforced by the immersive real-world case studies.

3. Training for Security Onion 2.4

We recently released Security Onion 2.4 and it has lots of new features and improvements! This class will help you take advantage of all those new features.

4. We teach the only OFFICIAL training for Security Onion

Security Onion Solutions is the only official provider of Security Onion training. If you want the best training, get it from the company that developed the platform!

5. No travel required

This is a virtual class and so you can attend from anywhere. No travel required! The times are convenient for US Eastern Time and European timezones.

Bonus reason: Support development of the free and open platform

Security Onion has been a free and open platform since 2008. We've invested many years of development into making Security Onion even better at helping you peel back the layers of your enterprise and making your adversaries cry. If you purchase training from us, you are helping to cover the cost of developing and maintaining the Security Onion platform, now and in the future.

Sign up today

There are a limited number of seats for this amazing class and the registration deadline is February 15, 2024. Don't delay, reserve your seat today!

Wednesday, January 17, 2024

Security Onion 2.4.40 now available including some new features and lots of bug fixes!

Security Onion 2.4.40 is now available! It includes some new features and lots of bug fixes!

SOC Improvements

This new version includes some massive upgrades to Security Onion Console (SOC)! 

SOC Grid shows you more detail about the health of your deployment:

SOC Dashboards and Hunt now allow you to dynamically control the columns in the Events table at the bottom of the page:

SOC Cases has some new analyzers:

Elastic Integrations

This release adds some new Elastic integrations:

You can find our full list of supported Elastic integrations at:

Known Issues

Please review the Release Notes for Known Issues:

About Security Onion

Security Onion is a free and open platform built by defenders for defenders. It includes network visibility, host visibility, intrusion detection honeypots, log management, and case management. 

For network visibility, we offer signature based detection via Suricata, rich protocol metadata and file extraction using your choice of either Zeek or Suricata, full packet capture via Stenographer, and file analysis via Strelka. For host visibility, we offer the Elastic Agent which provides data collection, live queries via osquery, and centralized management using Elastic Fleet. Intrusion detection honeypots based on OpenCanary can be added to your deployment for even more enterprise visibility. All of these logs flow into Elasticsearch and we’ve built our own user interfaces for alerts, dashboards, threat hunting, case management, and grid management. 

Security Onion has been downloaded over 2 million times and is being used by security teams around the world to monitor and defend their enterprises. Our easy-to-use Setup wizard allows you to build a distributed grid for your enterprise in minutes!


You can find our online documentation here:

Documentation is always a work in progress. If you find documentation that needs to be updated, please let us know as described in the Feedback section below.

New Installations

If this is your first time installing Security Onion 2.4, then we highly recommend starting with an IMPORT installation as shown at:

Once you’re comfortable with your IMPORT installation, then you can move on to more advanced installations as shown at:

Existing 2.4 Installations

If you have an existing Security Onion 2.4 installation, you can update to the latest version using soup:

2.3 EOL

Security Onion 2.3 will reach End Of Life (EOL) on April 6, 2024:


Lots of love went into this release!

Special thanks to all our folks working so hard to make this release happen!

  • Josh Brower
  • Jason Ertel
  • Wes Lambert
  • Corey Ogburn
  • Josh Patterson
  • Mike Reeves

Questions, Problems, and Feedback

If you have any questions or problems relating to Security Onion 2.4, please use the new 2.4 category at our Discussions site:


Need training? Start with our free Security Onion Essentials training and then take a look at some of our other official Security Onion training!

Security Onion Solutions 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!

Cloud Installations

For new Security Onion 2 installations in the cloud, Security Onion 2.4 will soon be available on the AWS, Azure, and GCP marketplaces!

AWS Marketplace and Documentation:

Azure Marketplace and documentation:

GCP Marketplace and documentation:

Screenshot Tour

If you want the quickest and easiest way to try out Security Onion 2.4, just follow the screenshots below to install an Import node. This can be done in a minimal VM with only 4GB RAM! For more information, please see:

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