An IT administrator wants to improve the user experience during the login process by reducing...

Without Pre-Authentication , a user might submit incorrect credentials, be redirected to the controller, have the controller send a RADIUS request, and then be redirected back to the portal with an error message. This "ping-pong" effect is slow and confusing. Enabling the pre-authentication check allows ClearPass to validate the credentials immediately while the user is still on the web page, providing instant feedback and eliminating the extra redirects for failed attempts.