Firewall ports which are required to get Operation Management server 2007R2 and Agent communicate together. And get Management Servers and web console communicate together.
Below figure and table show require ports
| Operations Manager 2007 Component A | Port Number and Direction | Operations Manager 2007 Component B | Configurable |
| Root management server | 1433 —> | OperationsManager database | Yes (Setup) |
| Root management server | 1434 UDP < — | OperationsManager database | No |
| Management server | 1433 —> | OperationsManager database | Yes (Setup) |
| Management server | 5723, 5724 —> | Root management server | No |
| Management server | 1433 –> | reporting data warehouse | No |
| gateway server | 5723 —> | Root management server | No |
| Root management server | 1433 —> | Reporting data warehouse | No |
| Reporting server | 5723, 5724 —> | Root management server | No |
| Operations console | 5724 —> | Root management server | No |
| Connector framework source | 51905 —> | Root management server | No |
| Web console server | 5724 —> | Root management server | No |
| Web console browser | 51908 —> | Web console server | Yes (IIS Admin) |
| Connected root management server (Local) | 5724 —> | Connected root management server (Connected) | No |
| Agent installed using MOMAgent.msi | 5723 —> | Root management server | Yes (Setup) |
| Agent installed using MOMAgent.msi | 5723 —> | Management server | Yes (Setup) |
| Agent installed using MOMAgent.msi | 5723 —> | gateway server | Yes (Setup) |
| gateway server | 5723 —> | Management server | Yes (Setup) |
| Agent (Audit Collection Services forwarder) | 51909 —> | Management server Audit Collection Services collector | Yes (Registry) |
| Agentless Exception Monitoring data from client | 51906 —> | Management server Agentless Exception Monitoring file share | Yes (Client Monitoring Wizard) |
| Customer Experience Improvement Program data from client | 51907 —> | Management server (Customer Experience Improvement Program End) Point | Yes (Client Monitoring Wizard) |
| Operations console (reports) | 80 —> | SQL Server Reporting Services | No |
| Reporting server | 1433 —> | Reporting data warehouse | Yes |
| Management server (Audit Collection Services collector) | 1433 —> | Audit Collection Services database | Yes |
| Management server or gateway server | 1270 — > | UNIX or Linux computer | No |
| Management server or gateway server | 22 — > | UNIX or Linux computer | Yes |
You can refer Microsoft Tech-net Link
http://technet.microsoft.com/en-us/library/bb309428.aspx
Mai Ali's Technical Blog 