What is RADIUS Change of Authorization (CoA)?
- It allows ClearPass to transmit messages to the Network Attached Device/Network Attached Server (NAD/NAS) to modify a user's session status
- It allows clients to issue a privilege escalation request to ClearPass using RADIUS to switch to TACACS+
- It is a mechanism that enables ClearPass to assigned a User-Based Tunnel (UBT) between a switch and controller for Dynamic Segmentation
- It forces the client to re-authenticate upon roaming to an access point controlled by a foreign mobility controller.
Answer(s): A
Reference:
http://www.arubanetworks.com/techdocs/ClearPass/Aruba_CPPMOnlineHelp/Content/CPPM_User Guide/Enforce/EPRADIUS_CoA.htm
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