What does the term 'CoA' stand for in the context of Cisco ISE?

The term 'CoA' stands for Change of Authorization in the context of Cisco Identity Services Engine (ISE). This feature allows network administrators to modify the authorization of a user's session after it has already been established. CoA is particularly useful in scenarios where the network needs to enforce changes in access levels without requiring the user to re-authenticate. For example, if a user’s role changes or if specific conditions of the network environment change, the ISE can dynamically adjust the permissions accordingly using CoA.

The ability to change a user's access in real-time enhances network security and management by ensuring that users only have access to the resources appropriate to their current status or requirements. This real-time capability underlines the importance of CoA in managing network policies effectively and responding swiftly to evolving network conditions.