# Engine ports

Python engines running under the Spotfire Service for Python require open ports to communicate. The first available port, and the range to the last available port, are determined by these two settings.

The defaults specify a range between 62001 and 63000.

Configuration property | Default setting | Description
--- | --- | ---
`engine.port.min` | `62001` | The first specified available port set for a Python engine.
`engine.port.range` | `1000` | This value, added to the value specified in `engine.port.min`, indicates the range of the ports available for the Python engines.