Offline Repositories

Offline repositories allow you to share repository data from one Tenable Security Center deployment to your primary Tenable Security Center deployment via manual export and import (a .tar.gz archive file). You can combine data from several repository files into a single offline repository by importing multiple files to the offline repository.

Offline repositories are particularly useful to export data from air-gapped instances of Tenable Security Center. For more information, see Considerations for Air-Gapped Environments.

Note: You cannot set an offline repository as the Import Repository for active scans. You can only use offline repository data for reporting purposes.

To fully configure an offline repository:

  1. Add an offline repository to your primary Tenable Security Center deployment.
  2. Export one or more repositories from your other Tenable Security Center deployment.
  3. Import one or more repositories to the offline repository on your primary Tenable Security Center deployment.

Offline Repository Options

Option Description

General

Name

The repository name.

Description

(Optional) A description for the repository.

Access

Data Type The type of data in the other Tenable Security Center repository: IPv4, IPv6, Mobile, Agent, or Universal.
IP Ranges

If the Data Type is IPv4 or IPv6, specifies the IP address range of vulnerability data that you want to view in the offline repository. For example, to view all data from the exported repository file, specify a range that includes all data in that repository.

Type the range as a comma-delimited list of IP addresses, IP address ranges, and/or CIDR blocks.

For more information, see IPv4/IPv6 Repositories.
Type

If the Data Type is Mobile, the type of mobile repository: ActiveSync, AirWatch MDM, Apple Profile Manager, Blackberry UEM, Good MDM, Microsoft Intune, or Mobile Iron.

For more information, see Mobile Repositories.

Access

Organizations

Specifies which organizations have access to the vulnerability data stored in the repository.

If groups are configured for the organization, Tenable Security Center prompts you to grant or deny access to all of the groups in the organization. For more granular control, grant access within the settings for that group.

Advanced Settings

Generate Trend Data

When enabled, Tenable Security Center generates trend data by taking periodic snapshots of the cumulative database. Trend data is displayed in some Tenable Security Center tools (e.g., trending line charts and trending area charts).

Tenable Security Center also produces differential data (snapshot comparison data), which improves performance when displaying trend data in Tenable Security Center tools.

Tip: Disable this option to reduce your disk space usage.

Days Trending

Specifies the number of days of cumulative vulnerability data that you want Tenable Security Center to display in dashboard and report vulnerability trending displays.

Enable Full Text Search

When enabled, Tenable Security Center includes vulnerability text in periodic snapshots of .nessus data for vulnerability trending purposes. For more information about the Vulnerability Text filter component, see Vulnerability Analysis Filter Components.