| Port | Service | From | To | Description |
| 9591/TCP | SSL | TPS/TPS primary | TPS/TPS secondary | TRHA messaging via SSL. Each HA ping (heartbeat) message is sent at 60 second intervals. |
| TPS/TPS secondary | TPS/TPS primary |
Views:

| Port | Service | From | To | Description |
| 9591/TCP | SSL | TPS/TPS primary | TPS/TPS secondary | TRHA messaging via SSL. Each HA ping (heartbeat) message is sent at 60 second intervals. |
| TPS/TPS secondary | TPS/TPS primary |