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N2OS Release Notes
N2OS Release Notes for all the latest releases.
N2OS 26.4.0
Contents and detection
A list of the improvements for the Contents and Detection that have been introduced in this release.

N2OS Release Notes
N2OS Release Notes for all the latest releases.
- N2OS 26.4.0
  - Highlights
    An overview of the most impactful changes in this release.
  - Updates in upcoming releases
    Important changes in future releases that might require additional steps or planning during an upgrade.
  - Base OS
    A list of the improvements for the operating system and GUI usability changes that have been introduced in this release.
  - Reports and integrations
    A list of improvements for the queries, assertions and reports, and new developments for data and firewall integrations that have been introduced in this release.
  - Protocols, Smart Polling, and Arc
    A list of the improvements for Protocols, Smart Polling and Arc that have been introduced in this release.
  - CMC, Remote Collector, and AAA
    A list of the improvements for the CMC, Remote Collector and Authentication, Authorization and Accounting that have been introduced in this release.
  - Contents and detection
    A list of the improvements for the Contents and Detection that have been introduced in this release.
  - Resolved issues
    A list of the bugs and defects that have been addressed in this release.
  - Security fixes
    A list of security problems that have been addressed in this release.
  - Update path requirements
    Follow these instructions to have a smooth upgrade experience.
- N2OS 26.3.0
- N2OS 26.2.0
- N2OS 26.1.0
- N2OS 26.0.0
- N2OS 25.6.0
- N2OS 25.5.0
- N2OS 25.4.0
- N2OS 25.3.0
- N2OS 25.2.0
- N2OS 25.1.0
- N2OS 25.0.0
- N2OS 24.6.0
- N2OS 24.5.1
- N2OS 24.5.0
- N2OS 24.4.1
- N2OS 24.4.0
- N2OS 24.3.1
- N2OS 24.3.0
- N2OS 24.2.0
- N2OS 24.1.0
- N2OS 24.0.0
- N2OS 23.4.1
- N2OS 23.4.0
- N2OS 23.3.1
- N2OS 23.3.0
- N2OS 23.2.0
- N2OS 23.1.0
- N2OS 23.0.0

Contents and detection

A list of the improvements for the Contents and Detection that have been introduced in this release.

N2OS-17554: Suricata has been updated to branch 8.0.
ENG-385: Delta‑V Program Transfer alerts are now unified under one signature and risk level, enabling alert rules matching and correct security profile-based visibility while emitting only one alert per transfer.
ENG-970: Addressed an issue where alert note edits made via OpenAPI on a Central Management Console (CMC) were not propagated to downstream Guardians.
ENG-1489: AC800M controller: a device state change alert is now generated in the event of a redundancy switch over.
ENG-1812: Fixed an issue where alert rules referencing zone names with spaces would arrive broken on Guardian after propagation from Vantage. The zone name was silently truncated at the first space, causing rules, for example, mute rules to not match any alerts. The fix encodes values in the rule string on the Vantage side and decodes them on the Guardian side.
ENG-1855: Added Common Platform Enumeration (CPE) generation for Oracle Linux assets polled by Smart Polling.
ENG-2045: The SIGN:CLEARTEXT-PASSWORD for file transfer protocol (FTP) protocol now obeys the hide_username_on_alerts and hide_password_on_alerts configurations, hiding the detected cleartext username/password in the alert's description when the setting is enabled.