You are the network administrator for The network consists of a single Active Directory domain named The intranet Web site is hosted on a Windows Server 2003 computer named TestKing4, which is a member of a workgroup. All client computers are members of the domain and are enabled for IPSec. The network security administrator creates a new security policy for TestKing4. The policy states that only HTTP traffic is permitted, that HTTP traffic must be encrypted, and that all computers must be authenticated. The new security policy is implemented. Domain users report that they are not able to connect to TestKing4. You load the IP Security Monitor snap-in, and you view the details shown in the following window. You need to ensure that all domain users can securely connect to TestKing4. What should you do?（）

• A、Install a digital certificate on TestKing4.
• B、Make TestKing4 a member of the domain.
• C、Change the source and destination ports for outbound traffic.
• D、Change the source and destination ports for inbound traffic.