You are a desktop support technician for your company. Windows Server Update Service (WSUS) server is deployed. All clients run Windows Vista. Your security team has assigned the Secure Server IPsec policy on the WSUS server.
You need to ensure that Windows Vista comptuers can receive updates from the WSUS server. What should you do?

A.
Restart the IP Helper service.

B.
Run wuaclt.exe / detectnow on the Windows Vista computers.

C.
Allow inbound TCP Port 8530 on all Windows Vista computers.

D.
Create a new Windows Firewall security rule.