112 | Authentication Dell PowerConnect W-Series Instant Access Point 6.1.3.4-3.1.0.0 | User Guide Retry count— Enter a value between 1 and 5. The default value is 3.Figure 97 Configuring an External RADIUS Server6. Click OK after updating the fields.7. Reauth interval — When set to a value greater than zero, the Access Points will periodically reauthenticate allassociated and authenticated clients.8. Blacklisting— Select Enabled if you want clients to be blacklisted after a certain number of authenticationfailures. Max authentication failures— Users who fail to authenticate the number of times specified here will bedynamically blacklisted. The maximum value for this entry is 10.Navigate to PEF > Blacklisting in the WebUI to specify the duration of the blacklisting on the Blacklistingtab of the PEF window.9. For Internal users— Click Users to populate the system’s internal authentication server with users. Forinformation about adding a user, see “Adding a User” on page 235.10. Click Next to continue and then click Finish.Enabling Instant RADIUSTo enable Instant RADIUS:1. Click the Settings at the top right corner of the Instant UI.2. Select Enabled from the Dynamic RADIUS Proxy drop-down list. When enabled, the Virtual Controllernetwork will use the IP Address of the Virtual Controller for communication with external RADIUS servers.You must set the Virtual Controller IP address as a NAS client in the RADIUS server if Dynamic RADIUSProxy is enabled.
