You work as an IT professional in an international corporation named Wiikigo. In the company, your job is to configure Microsoft Internet Security and Acceleration Server 2006. And you are experienced in performing and managing networks and operational systems. In addition, you are skilled at deploying ISA Server 2006, configuring firewall settings, and optimizing performance of the ISA Server 2006 cache. There is a head office and two branch offices in the company. Each office is configured with a server. ISA Server 2006 Enterprise Edition is run by the server. The ISA Servers connect to the Internet and offer Internet access to users. There is a Configuration Storage server in the head office. In the head office, the ISA Server is configured as a firewall and as a VPN gateway to the Internet. In the branch offices, the ISA Servers use an L2TP/IPsec site-to-site VPN tunnel to connect to the head office. You must make sure that in the event that the VPN tunnel is not available, the Configuration Storage server can be accessed by the ISA Servers in the branch offices. In order to make sure of this, what action should you perform? (Choose more than one)

A.
The branch office array should be configured to connect over a VPN site-to-site connection and to utilize an alternate securely-published Configuration Storage server.

B.
On the Configuration Storage server, a certificate should be installed.

C.
In the head office, a firewall policy rule should be created on the ISA Server.

D.
In the branch offices, a firewall policy rule should be created on the ISA Servers.

E.
You should use LDAPS on port 2174 to publish the Configuration Storage server.