You are the network administrator for TestKing.com. A server named TestKingSrvA functions as an intranet Web server for the human resources (HR) department. A server named TestKingSrvB is a Microsoft Exchange 2000 Server mail server. The network configuration is shown in the exhibit. TestKingSrvA contains confidential documents that must be accessed daily by users on only the 10.9.8.0 subnet. All users must be able to connect to TestKingSrvB. You want to configure the TCP/IP properties of TestKingSrvA to prevent any computer in the 10.9.7.0 subnet from establishing a session with TestKingSrvA. What should you do?