Dell SonicWall SRA 4200 Administrator's Manual page 45

Two-Factor Authentication Login Processes
This section provides examples of the two-factor authentication login prompts when using Web
login and NetExtender.
With Web login, the Username and Password fields are used to enter the first-stage
credentials.
When prompting the user to input the challenge code, the message "Please enter the M.ID
PIN:" is the reply message from the RADIUS server in this example; different RADIUS servers
may have different reply message formats.
Some RADIUS servers may require the user to respond to several challenges to complete the
authentication. In this example, the M.ID server asks the user to supply two challenges. The
following passcode can be received through email or cellphone (if SMS is configured).
When using two-factor authentication with the NetExtender Windows client, the login process
through the client is very similar to logging in through the Web page. Initially, the Username
and Password fields are used to enter the first-stage credentials.
SRA Overview | 45