In AWS DeviceFarm, the system that runs the test scripts and the attached devices are not physically connected to the same network since AWS DeviceFarm just provides a cloud-based testing environment where you can run tests on real devices in an isolated environment.

Since these are not connected to the same network, direct network communication between your desktop machine and the attached device isn't supported. Although you can use the APIs and features provided by AWS DeviceFarm such as CreateUpload [1] to upload an app or the testscripts to be ran by your app on the device.

References:

[1]. https://docs.aws.amazon.com/devicefarm/latest/APIReference/API_CreateUpload.html