Some IP interfaces use TCP ports for communication between services. There are ports that are reserved by the system and therefore cannot be used.
| Port | Description |
|---|---|
| 0 | The port 0 is used to use any port for communication. |
| 1-1'023, 10'000, 10'001 | This range is reserved for system services. |
| 32'768-60'999 | This range is reserved for outgoing connections. |
| Not 0-65'535 | Also displayed as an invalid value. |