System-wide Agent Settings

On your agent's manager, you can configure system-wide agent settings to specify agent and freeze window settings for all your linked agents. For more information on creating, modifying, and deleting freeze windows, see Freeze Windows.

You can also adjust log level, performance level, automatic hostname update, and automatic version update settings for individual agents. For more information, see Manage an Agent's Settings.

Option Description
Manage Agents

Track unlinked agents

When this setting is enabled, agents that are unlinked are preserved in the manager along with the corresponding agent data. This option can also be set using the nessuscli utility.

Unlink inactive agents after X days

Specifies the number of days an agent can be inactive before the manager unlinks the agent.

Inactive agents that were automatically unlinked by Nessus Manager automatically relink if they come back online.

Requires that Track unlinked agents is enabled.

Remove agents that have been inactive for X days

Specifies the number of days an agent can be inactive before the manager removes the agent.

Remove bad agents

When this setting is enabled, agents with one or more of the following criteria are removed from Nessus Manager:

  • The agent was previously deleted or removed by a user.

  • The agent does not provide a valid access token.

  • The agent was blocklisted.

Blackout Windows
Enforce a permanent blackout window schedule

When enabled, Nessus Manager prevents agents from updating software. The following blackout window settings also apply during this window.

Tip: This setting acts as a permanent blackout window while it is enabled.

Prevent software updates When enabled, agents do not receive software updates during scheduled blackout windows.
Prevent plugin updates When enabled, agents do not receive plugin updates during scheduled blackout windows.
Prevent agent scans When enabled, the system does not run agent scans during scheduled blackout windows.