You have a System Center Operations Manager 2007 environment. The Operations Manager Audit Forwarding Service is running on agents in the perimeter network outside the firewall. The agents communicate locally with a Gateway server that has the Audit Collection Services (ACS) Collector role enabled. The Gateway server is configured to communicate with an ACS Database server that is located on the network inside the firewall. Events are currently not being written to the Audit Collection database. You need to ensure that security events from managed agents are collected. What should you do?

A.
Open inbound TCP port 51909 on the firewall.

B.
Open inbound TCP port 1433 on the firewall.

C.
Run the C:Windowssystem32AdtAgent.exe command-line tool on each ACS forwarder.

D.
Issue a server certificate for the Audit Collector by using Microsoft Certificate Services. Import and assign the certificate.

Explanation:
A: INCORRECT
Server: Agent (Audit Collection Services forwarder) Port: 51909 —> Server: management server Audit Collection Services collector

B:CORRECT
Using a Firewall with Operations Manager 2007 – http://technet.microsoft.com/en-us/library/cc540431.aspx

Server : management server (Audit Collection Services collector) Port:1433 —> Server:Audit Collection Services database