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ProSecure Unified Threat Management (UTM) Appliance Reference Manual
D-4 Two Factor Authentication
v1.0, January 2010
3. The user then proceeds to the Two-Factor Authentication login page and enters the generated
one-time passcode as the login password.
Note: The one-time passcode is time synchronized to the authentication server so that
the OTP can only be used once and must be used before the expiration time. If
a user does not use this passcode before it is expired, the user must go through
the request process again to generate a new OTP.
Figure D-3