Did you know Security Onion scales to the enterprise? Security Onion is designed to scale from simple standalone deployments all the way up to large distributed deployments for your enterprise! Here are some of our enterprise use cases:
For the complete list of use cases, please see the Use Cases section of our documentation:
https://docs.securityonion.net/en/2.4/use-cases.html#use-cases
We've scheduled the next run of our 4-day Security Onion Fundamentals for Analysts & Admins class!
Use promo code earlybird by December 3, 2024 to receive 10% off!
For more details and to register, please see:
If you have any questions about this class, please use the Contact link on the bottom of the Eventbrite page.
For other training options, please see:
https://securityonionsolutions.com/training/
Did you know Security Onion provides a customized Elastic Agent that makes deployment easier?
Check out our Elastic Agent documentation:
https://docs.securityonion.net/en/2.4/elastic-agent.html
Also see our Elastic Agent video:
Did you know Security Onion works for several different use cases from minimal deployments all the way up to large enterprise deployments? Here are just a few of the smaller deployment use cases:
For a longer list, please see the Use Cases section of our documentation:
https://docs.securityonion.net/en/2.4/use-cases.html#use-cases
We've been offering our Security Onion documentation in book form on Amazon for a few years and it's now been updated for the recently released Security Onion 2.4.110!
Thanks to Richard Bejtlich for writing the inspiring foreword!
Proceeds go to the Rural Technology Fund!
This edition has been updated for Security Onion 2.4.110 and includes a 10% discount code for Security Onion Pro and a 20% discount code for our on-demand training and certification!
This book covers the following Security Onion topics:
Q&A
What is the difference between this book and the online documentation?
This book is the online documentation formatted specifically for print. It also includes an inspiring foreword by Richard Bejtlich that is not available anywhere else! Proceeds go to the Rural Technology Fund! Finally, the printed book includes a 10% discount code for Security Onion Pro and a 20% discount code for our on-demand training and certification.
Who should get this book?
You should get this book if you work on airgap networks or simply want a portable reference that doesn't require an Internet connection or batteries! Also anyone who wants to donate to a worthy cause like Rural Technology Fund!
What is the difference between this edition and the previous edition?
This edition has been updated for Security Onion 2.4.110!
Where do we get it?
https://securityonion.com/book
On Monday, we released version 2.4.110:
https://blog.securityonion.net/2024/10/security-onion-24110-hurricane-helene.html
That release had an issue that affected a small percentage of users with custom policies:
https://github.com/Security-Onion-Solutions/securityonion/issues/13795
Today, we are releasing a hotfix which resolves this issue:
https://docs.securityonion.net/en/2.4/release-notes.html
Known Issues
For a list of known issues, please see:
https://docs.securityonion.net/en/2.4/release-notes.html#known-issues
Existing 2.4 Installations
If you have an existing Security Onion 2.4 installation, you can update to the latest version using soup:
https://docs.securityonion.net/en/2.4/soup.html
Before updating your production deployment, we highly recommend testing the upgrade process on a test deployment that closely matches your production deployment if possible. This is especially important for releases that update components like Salt and Elastic.
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:
https://docs.securityonion.net/en/2.4/first-time-users.html
Once you’re comfortable with your IMPORT installation, then you can move on to more advanced installations as shown at:
https://docs.securityonion.net/en/2.4/architecture.html
Documentation
You can find our online documentation here:
https://docs.securityonion.net/en/2.4/
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.
Questions, Problems, and Feedback
If you have any questions or problems relating to Security Onion 2.4, please use the 2.4 category at our Discussions site:
https://github.com/Security-Onion-Solutions/securityonion/discussions/categories/2-4
Security Onion Pro
We recently celebrated 10 years in business by announcing Security Onion Pro:
https://blog.securityonion.net/2024/07/celebrating-10-years-of-security-onion.html
Security Onion Pro includes many enterprise features that folks have been asking for:
You can read more about these enterprise features at:
Training
Need training? Start with our free Security Onion Essentials training and then take a look at some of our other official Security Onion training!
https://securityonion.net/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!
https://securityonionsolutions.com/hardware
Hurricane Helene Update
On Friday, September 27, Hurricane Helene hit Augusta GA. All of our team members are safe, but many folks had significant property damage and were without power and Internet access for several days. Due to the amount of damage to the Augusta region, we had no choice but to cancel all Augusta Cyber Week activities including our 4-day Security Onion training class, our annual Security Onion Conference, and BSidesAugusta.
We are truly thankful for the countless men and women who have worked tirelessly over the last week to restore power and other services to our area. At this point, most of our team members have power although some still do not have reliable Internet access. We are all starting the long process of slowly repairing the property damage that this brutal storm caused.
We sincerely appreciate all those who reached out to check on us. Several folks have asked how they can help support Security Onion Solutions during this time. For individuals, please consider donating to the Red Cross to help others in need. If your organization would like to help support Security Onion Solutions directly, please consider purchasing Security Onion Pro. Thank you!
Security Onion 2.4.110
Hurricane Helene may have cancelled our training class and conferences, but it couldn't cancel this release! Security Onion 2.4.110 is now available and includes a brand new AI Summary feature and much more!
Have you ever looked at a NIDS, YARA, or Sigma rule and didn't quite understand what the rule was looking for? Our default rules now make this easier with new human readable summaries generated by AI! For example, here is a NIDS rule followed by its new AI summary:
Here is a Sigma rule followed by its new AI summary:
Finally, here is a YARA rule followed by its new AI summary:
https://docs.securityonion.net/en/2.4/release-notes.html#changes
Known Issues
For a list of known issues, please see:
https://docs.securityonion.net/en/2.4/release-notes.html#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, and file analysis. 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!
Documentation
You can find our online documentation here:
https://docs.securityonion.net/en/2.4/
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:
https://docs.securityonion.net/en/2.4/first-time-users.html
Once you’re comfortable with your IMPORT installation, then you can move on to more advanced installations as shown at:
https://docs.securityonion.net/en/2.4/architecture.html
Existing 2.4 Installations
If you have an existing Security Onion 2.4 installation, you can update to the latest version using soup:
https://docs.securityonion.net/en/2.4/soup.html
Before updating your production deployment, we highly recommend testing the upgrade process on a test deployment that closely matches your production deployment if possible. This is especially important for releases that update components like Salt and Elastic.
2.3 EOL
As a reminder, Security Onion 2.3 reached End Of Life (EOL) on April 6, 2024:
https://blog.securityonion.net/2023/10/6-month-eol-notice-for-security-onion-23.html
Thanks
Lots of love went into this release!
Special thanks to all our folks working so hard to make this release happen!
Questions, Problems, and Feedback
If you have any questions or problems relating to Security Onion 2.4, please use the 2.4 category at our Discussions site:
https://github.com/Security-Onion-Solutions/securityonion/discussions/categories/2-4
Security Onion Pro
We recently celebrated 10 years in business by announcing Security Onion Pro:
https://blog.securityonion.net/2024/07/celebrating-10-years-of-security-onion.html
Security Onion Pro includes many enterprise features that folks have been asking for:
You can read more about these enterprise features at:
https://securityonion.com/proTraining
Need training? Start with our free Security Onion Essentials training and then take a look at some of our other official Security Onion training!
https://securityonion.net/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!
https://securityonion.com/hardware
Cloud Installations
For new Security Onion 2 installations in the cloud, this new version will soon be available on the AWS, Azure, and GCP marketplaces!
AWS Marketplace and Documentation:
https://securityonion.net/aws/?ref=_ptnr_soc_blog_241007
https://docs.securityonion.net/en/2.4/cloud-amazon.html
Azure Marketplace and documentation:
https://securityonion.net/azure
https://docs.securityonion.net/en/2.4/cloud-azure.html
GCP Marketplace and documentation:
https://securityonion.net/google
https://docs.securityonion.net/en/2.4/cloud-google.html
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:
https://docs.securityonion.net/en/2.4/first-time-users.html
