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 server in the company network. ISA Server is run by this network. The ISA Server has been configured as a firewall and as a VPN gateway. Another company named Luxware is purchased by your company. A third-party firewall and VPN solution is used by Luxware. According to the company requirement, resources on both networks should be able to be accessed by users from both networks. Since you are the technical support, the company asks you to work out a solution that offers TCP/IP connectivity between the two networks. So what is your solution?

A.
You should recommend site-to-site VPN that uses L2TP/IPsec and Kerberos

B.
You should recommend SSL-to-SSL bridging

C.
You should recommend publishing rule for PPTP

D.
You should recommend site-to-site VPN that uses IPsec tunnel mode