A technician has deployed a new VPN concentrator. The device needs to authenticate users based on a backend directory service.
Which of the following services could be run on the VPN concentrator to perform this authentication?
A.
Kerberos
B.
RADIUS
C.
GRE
D.
IPsec
Explanation:
https://security.stackexchange.com/questions/130095/what-is-the-difference-between-a-radius-server-andactive-directory