1.20.3. RADIUS Authentication fails

If RADIUS authentication fails or times out you should take a look at the FreeRADIUS log file usually located at /var/log/freeradius/radius.log.

A failed request would look like this:

Tue Sep 14 11:34:47 2010 : Error: rlm_linotp: (lotp_auth) LinOTPd returned ':-('
Tue Sep 14 11:34:47 2010 : Auth: rlm_linotp: Rejecting fall-through 'testuser'

To get more information about this you should now take a look at the LinOTP log file. (see section OTP Authentication).