In your office, you are building a new wireless network that contains Windows 2003 servers. To
establish a network for secure communication, you have to implement IPSec security policy on the
servers. What authentication methods can you use for this implementation? Each correct answer
represents a complete solution. Choose all that apply.

A.
Public-key cryptography

B.
Kerberos

C.
Preshared keys

D.
Digital certificates