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. An ISA Server 2006 computer is included by your network and computer is named ISA01. Outgoing connections is permitted to the Internet. A network address translation (NAT) relationship between the Internal network and the Internet is defined by a network rule. Access to PPTP and L2TP over IPSec VPN servers on the Internet is required by users on ISA Server protected networks. All network computers, except ISA1, are set as both Web Proxy and Firewall clients. Access rules on ISA1 are created to permit outbound connections to the Internet by utilizing PPTP Client, IPSec NAT Traversal (NAT-T) Client, and IKE Client protocols. You find a problem that Internet PPTP and L2TP over IPSec VPN servers cannot be connected by the users. You are required to make sure that PPTP and L2TP over IPSec VPN servers on the Internet can be accessed by the users. Which action should be performed to finish the task?
A.
To finish the task, the Firewall client configuration should be disabled on the network computers.
B.
To finish the task, the network computers should be set as SecureNAT clients.
C.
To finish the task, the network computers should be set to utilize IPSec tunnel mode.
D.
To finish the task, the Web Proxy client configuration should be disabled on the network computers.