| Port | Service | From | To | Description |
| 22/TCP | SSH | SMS primary | SMS secondary | Secure remote command execution and file replication. |
| SMS secondary | SMS primary | |||
| 443/TCP | HTTPS | SMS primary | SMS secondary | HTTPS service for client communication, API, and Web Server |
| SMS secondary | SMS primary | |||
| 3306/TCP | MySQL | SMS primary | SMS secondary | Database replication. |
| SMS secondary | SMS primary | |||
| 9033/TCP | JMX | SMS primary | SMS secondary | JAVA Management Extensions for HA configuration and remote peer administration. |
| SMS secondary | SMS primary |
Views:
