Replying to myself: > the rdp2tcp "channel client" is missing in freerdp3, while it was built in freerdp2
After enabling it in the build options, it turns out the feature is not functional anyway. When trying to use it, one gets this output: > [ERROR][TODO] - [SetHandleInformation]: TODO: Implement It's probably the reason why it's disabled at build time. Best, -- Arnaud Rebillout / OffSec / Kali Linux Developer