License Count

Tenable recommends periodically reviewing your scanned assets, and clearing old or unwanted assets from Tenable Security Center. To do so, use the Age Out method to clear out old or unwanted assets. The Age out function automatically ages out assets older than the Vulnerability Lifetime value that you set for your repository.

Note: The assets are cleared out after Tenable Security Center's nightly cleanup process runs.

Besides using the age out option to remove the vulnerabilities in the repositories, enable the Immediately remove vulnerabilities from scanned hosts that do not reply option in your Active Scan settings to clear up stale assets or unresponsive hosts.

According to your organization’s policy, you can undertake this activity quarterly depending on the age out configuration. This can also help pick up accidental scanning activities when you detect a sudden spike in the license count usage.