Inventory

OT Security's Automated Asset Discovery, Classification, and Management provides an accurate, up-to-date asset inventory by continuously tracking all changes to devices. This simplifies sustaining of operational continuity, reliability, and safety. It also plays a key role in planning maintenance projects, prioritizing upgrades, patch deployments, incident response, and mitigation efforts.

Viewing Assets

All the assets in the network appear on the Inventory pages. The Inventory page includes details about the asset that enables comprehensive asset management as well as monitoring of the status of each asset and its related events. OT Security collects this data using the Network Detection and Active Query capabilities. The All page shows data for all types of assets. In addition, specific subsets of the assets are shown on separate screens for each of the following asset types: Controllers and Modules, Network Assets, and IoT.

Note: The Network Assets screen includes all types of assets that aren’t included in the Controllers and Modules or IoT screens.

For each of the asset pages (All, Controllers and Modules, Network Assets, and IoT), you can customize the display settings by adjusting which columns are displayed and where each column is positioned. You can also sort and filter the assets list as well as perform a search. For information about how to customize tables, see Management Console User Interface Elements.

The following table describes parameters on the Inventory pages.

Parameters marked with an “*” are only shown on the Controllers page.

Parameter	Description
Name	The name of the asset in the network. Click the name of the asset to view the Asset Details screen for that asset (See Inventory.)
IP	The IP address of the asset. Note: An asset may have multiple IP addresses. Note: IP addresses labeled as Direct are ones with which Tenable has established a direct connection. If there is no label, it means Tenable has discovered the IP without direct communication. Note: Assets can be filtered by IP range. For more on filtering, see Management Console User Interface Elements.
MAC	The MAC address of the asset.
Network Segment	The Network Segment that the IP/s of this asset are assigned to.
Type	The type of asset, Controller, I/O, or Communication, etc. see Asset Types.
Backplane*	The backplane unit that the asset is connected to. Additional details about the backplane configuration are shown in the Asset Details screen.
Slot*	For assets that are on backplanes, shows the number of the slot to which the asset is attached.
Vendor	The asset vendor.
Family*	The family name of the product as defined by the asset vendor.
Firmware	The firmware version currently installed on the asset.
Location	The location of the asset as input by the user in the OT Security asset details. See Edit Asset Details.
Last Seen	The time at which the device was last seen by OT Security. This is the last time that the device was connected to the network or performed an activity.
OS	The OS running on the asset.
Model Name	The model name of the asset.
State*	The device state. Possible values: Backup – the controller is running as a backup to a primary controller. Fault – the controller is in fault mode. NoConfig – no configuration has been set for the controller. Running – the controller is running. Stopped – the controller is not running. Unknown – the state is unknown.
Description	A brief description of the asset, as configured by the user in the OT Security asset details. See Edit Asset Details.
Risk	A measure of the degree of risk related to this asset on a scale from 0 (no risk) to 100 (extremely high risk). For an explanation of how the Risk score is calculated, see Risk Assessment.
Criticality	A measure of the importance of this asset to the proper functioning of the system. A value is assigned automatically to each asset based on the asset type. You can manually adjust the value.
Purdue Level	The Purdue level of the asset (0=Physical process, 1=Intelligent devices, 2=Control systems, 3=Manufacturing operations systems, 4=Business logistics systems).
Custom Field	You can create custom fields to tag your assets with relevant info. The custom field can be a link to an external resource.

Asset Types

The following table describes the various types of assets identified by OT Security. It also shows the icon by which each asset type is represented in the OT Security Management Console (for example on the Network Map screen).