RADIUS two-factor authentication means that the firewall cooperates with the RADIUS server to authenticate the SSL VPN user. When authenticating, in addition to verifying the user name and static PIN, the user is also required to enter a dynamic verification code. After receiving the user and PIN sent from the firewall, the RADIUS server checks whether the user name and PIN are correct according to its own database. Which options are correct for the subsequent process? (Multiple choice)

RADIUS two-factor authentication means that the firewall cooperates with the RADIUS server to authenticate the SSL VPN user. When authenticating, in addition to verifying the user name and static PIN, the user is also required to enter a dynamic verification code. After receiving the user and PIN sent from the firewall, the RADIUS server checks whether the user name and PIN are correct according to its own database. Which options are correct for the subsequent process? (Multiple choice)
A . If the username and PIN are incorrect, the RADIUS server sends an authentication failure message to the firewall.
B . If the username and PIN are correct, the RADIUS server sends a successful authentication message to the firewall.
C . If the username and PIN are correct, the RADIUS server sends a Challenge message to the firewall requesting a dynamic verification code.
D . If the username and PIN are incorrect, the RADIUS server client sends a message with "Illegal username, wrong password, or locked user".

View Answer

Answer: AC