Out-of-Band Management
Noun · Security & Infosec
Definitions
Administrative access provided through a separate network path or control interface from the normal production data plane, such as iLO, DRAC, serial consoles, or dedicated management links. Out-of-band management is valuable for recovery during outages, but it must be heavily protected because it bypasses many ordinary controls.
In plain English: A separate management path used to control systems even when the normal network is unavailable.
Example: "The administrators recovered the downed router through out-of-band management after the main network path failed."