UPDATE ......Confluence has now been updated to version 9.2.6. Please see following page for details and feedback about changes:
Updates
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IMPORTANT: When upgrading from RADIUS/UDP to RADIUS/(D)TLS with PSK, the PSK MUST NOT be identical to the RADIUS shared secret used before.
RADIUS feature matrix
For more information please check out the RADIUS slide deck with a feature matrix provided for WLPC EU 2023 by Herr Nilsson.