OT Security License Components

This topic breaks down the licensing process for Tenable OT Security as a standalone product. It also explains how assets are counted, lists add-on components you can purchase, explains how licenses are reclaimed, and describes what happens during license overages or expirations.

Tip: To update or reinitialize your license, see OT Security License Workflow.

Licensing Tenable OT Security

You can purchase Tenable OT Security in subscription or perpetual/maintenance versions.

To license Tenable OT Security, you purchase licenses based on your organizational needs and environmental details. Tenable OT Security then assigns those licenses to your assets: all detected devices with IP addresses, one license for each IP address.

When your environment expands, so does your asset count, so you purchase more licenses to account for the change. Tenable licenses use progressive pricing, so the more you purchase, the lower the per-unit price. For prices, contact your Tenable representative.

How Assets are Counted

In Tenable OT Security, your license count is based on the number of unique IP addresses in your environment. Assets are licensed from the moment they are detected.

Note: Assets on internal networks behind live IP addresses do not count towards your license. For example, in a redundantly connected Programmable Logic Controller (PLC) chassis with two live IP addresses and 10 modules behind these, only the two live IP addresses count towards your license.

Tenable OT Security Components

You can customize Tenable OT Security for your use case by adding components. Some components are add-ons that you purchase.

Included with Purchase Add-on Component

  • Virtual Core Appliance.

  • Tenable Security Center.

  • Tenable OT Security Enterprise Manager.

  • Tenable OT Security Configurable Sensor.

  • Tenable OT Security Certified Configurable Sensor.

  • Tenable OT Security Certified Core Platform.

  • Tenable OT Security Core Platform.

  • Tenable OT Security XL Core Platform.

Reclaiming Licenses

When you purchase licenses, your total license count is static for the length of your contract unless you purchase more licenses. However, Tenable OT Security reclaims licenses in real time as your asset count changes.

Tenable OT Security reclaims the following assets:

  • Hidden assets

  • Assets that have been offline for more than 30 days

  • Assets you remove or hide in the user interface

Exceeding the License Limit

In Tenable OT Security, you can only use your allocated number of licenses unless you purchase more licenses.

When you exceed your license limit:

  • Non-administrators can no longer access Tenable OT Security.

  • A message that your license has been exceeded appears in the user interface.

  • You can no longer restore assets from the Tenable OT Security Settings.

  • You can no longer update vulnerability plugins or IDS Signatures (Feed updates).

Note: When you exceed your license limit, Tenable OT Security can still detect and add new assets.

Expired Licenses

The Tenable OT Security licenses you purchase are valid for the length of your contract. 30 days before your license expires, a warning appears in the user interface. During this renewal period, work with your Tenable representative to add or remove products or change your license count.

After your license expires, Tenable OT Security is disabled and you cannot use it.