There is a setting, Idle session timeout, to automatically disconnect a connection if no keyboard or mouse input is detected through Splashtop. (Keyboard and mouse activity on the host machine directly does not count.)
- Open Splashtop Streamer and click on the Settings tab
- Scroll down and adjust the field in minutes before an idle session disconnects.
Configure via deployment package
- Login at my.splashtop.com
- Click on Management->Deployment
- Click on "Create Deployment Package"