The release of Immunity 2026.2 focuses on one key theme: insight. In this autumn release, we are introducing new ways to analyse network activity and explain connection issues more quickly. We are also adding more flexibility for device management, improving the user experience, and further expanding our hardware support.
New in Immunity 2026.2
New insights with LAN events
What has changed on the network over the past day? For many administrators, this is a crucial question, especially in environments where changes are restricted and every modification can impact availability or confidentiality.
That is why we are introducing LAN events. This new overview makes it clear which changes have taken place on the LAN. Administrators can easily view and filter events by location, switch, or time period, for example. This provides faster insight into network changes without the need for manual investigation.
Identify the cause of connection issues faster
RADIUS events have also been added at the request of several Immunity customers. This overview provides insight into error messages that occur when connecting to the network.
Whether it concerns an incorrect username, a certificate issue, or a fault in the authentication backend, the cause can now be found more quickly. The information is available as a chronological log for current incidents, but can also be viewed within a trace for a specific MAC address.
This allows administrators to determine more quickly where a connection is failing.
Temporarily pause managed devices
During maintenance or migrations, it is sometimes desirable for Immunity to temporarily stop making changes to a device.
With Immunity 2026.2, you can now temporarily pause a managed device. Once the device is made active again, Immunity ensures that the configuration is re-synchronised. Please note that this may cause a brief interruption to the connection.
Redesigned device details page
The amount of information available within device details has grown significantly recently. To maintain a clear overview, this page has been redesigned.
Thanks to the new layout, information is grouped more logically, allowing you to find what you need at that moment more quickly.
Expansion of hardware and device support
Immunity 2026.2 adds support for various new platforms and capabilities:
- Support for the Siemens Scalance X200 series (OT switches). Please note: this works via VLAN security instead of port security, which means that certain actions may take slightly longer.
- Support for FortiSwitch 124G and 148F.
- Support for disconnects on UniFi for Network Application 10.0 and higher.
- Aruba CX can now also be managed via port security. Please note: upgrades may cause a brief interruption to connections.
- Support for Arista switches (720XP series).
Technical adjustments
In addition to the visible updates, this release also includes various technical improvements. Two key changes:
- The migration to PostgreSQL 18 as the database.
- The ability to send RADIUS syslog to multiple servers simultaneously.
Release Notes
Curious about the full list of new features and improvements? View the Release Notes here: Tesorion Immunity 2026.2 Release Notes.
