External Repositories

An external repository lets you access a local repository from another Tenable Security Center deployment for reporting purposes. External repository data is read-only. You cannot use an external repository as the Import Repository for active scans.

About Remote Repositories

Remote repositories allow you to share repository data from one Tenable Security Center deployment to your primary Tenable Security Center deployment via an SSH session. By default, Tenable Security Center Director uses ECDSA keys for remote repository authentication.

Task Remote Repository
Data transfer Automatic — Tenable Security Center syncs data over SSH on a configured schedule.
Typical use case Networked deployments where both instances can communicate over SSH. For large enterprise deployments, see Tiered Remote Repositories.
Version requirement Both Tenable Security Center deployments must run the same version.
Data freshness Updated automatically on the configured schedule.
Key limitation Both deployments must be reachable over SSH.

Configure a Remote Repository

To fully configure a remote repository:

  1. Add a remote repository to your primary Tenable Security Center deployment, specifying the IP address of the remote instance.
  2. When prompted, provide credentials for an administrator account on the remote Tenable Security Center. The deployments exchange SSH keys and the available repositories populate automatically.
  3. Select the repository to sync and configure the update schedule.

For more information, see Remote Repositories, Repositories, and Add a Repository.