NETGEAR SRX5308 - ProSafe® Quad WAN Gigabit SSL VPN Firewall Reference Manual page 364

ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308 Reference Manual
Note: The one-time passcode is time-synchronized to the authentication server so that
the OTP can be used only 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.
3. The user then proceeds to the Two-Factor Authentication login page and enters the generated
one-time passcode as the login password.
Figure D-3
D-4
v1.0, April 2010
Two-Factor Authentication