What is RADIUS Change of Authorization (CoA)?
What is RADIUS Change of Authorization (CoA)?
RADIUS Change of Authorization (CoA) allows ClearPass to transmit messages to the Network Attached Device/Network Attached Server (NAD/NAS) to modify a user's session status. This mechanism is used to change the permissions or characteristics of a session, such as disconnecting a user, changing the VLAN, or updating the bandwidth restrictions, without needing the user to re-authenticate.
A, B and D are incorrect.