The Internal Certificate Authority (ICA) is a fully featured, internal authentication server that is installed on a Security Management Server. The ICA cannot be used in which of the following situations?

A.
Establishing site-to-site VPNs between Gateways

B.
Using a certificate over the Internet

C.
Authenticating SecuRemote and SecureClient traffic to Gateways for VPN capabilities

D.
Using Hybrid Mode RAS VPN for authenticating Gateways to SecuRemote and SecureClient users

E.
Providing certificates for users and security administrators