Nessus Agents can be in one of the following statuses:
The host that contains the Nessus Agent is currently connected and in communication with Nessus Manager or Tenable.io.
|Offline||The host that contains the Nessus Agent is currently powered down or not connected to a network.|
The Nessus Agent is in the process of checking in with Nessus Manager or Tenable.io.
Agents with this status are only present if Track unlinked agents is enabled.
Note: Agents that are automatically unlinked via the Unlink inactive agents after X days setting can automatically relink to Nessus Manager if they come back online. You must manually relink agents that were manually unlinked.