You have a server named Server1 that runs Windows Server 2003 Service Pack 2 （SP2）.  You open the IP Security Monitor snap-in and see the information shown in the exhibit. （Click the Exhibit button.） You need to ensure that all communications to Server1 are encrypted.  What should you do？（）

• A、Modify the Local Security Policy on Server1.
• B、Modify the Research IPSec Policy Group Policy object.
• C、Enable Windows Firewall and do not allow exceptions.
• D、From the Properties of the Local Area Connection， modify the Authentication settings.