is there a way to show failed authentication requests (management access) from network devices not connected to the NAC?
If the network device (e. g. a Switch) is connected to NAC (Switch is added to the NAC Appliance Group) and a user try to login with wrong credentials I can see a log entry in the "NAC Appliance Events" list.
But if I configure a device to use the NAC as radius and do not add the device to the NAC Appliance Group, I can't see an attempt to authenticate on the device.
In my opinion it would be useful to see these attempts for example to see a DOS or a wrong configured device.
Is there a way to show these attempts in any log (Syslog, NAC Appliance Events ...)
Thank you fore help.