How do I connect to Microsoft DevBox VM w/a Linux RDP client?

I currently have an Azure subscription w/Microsoft along w/an Azure DevBox (currently running Windows 10).  

There are instructions provided for connecting to the DevBox from Microsoft's RDP client (and from a browser), but I'm unclear as to how to connect to it from a 3rd party RDP client (i. e. rdesktop for Linux, which I'm using).

Does anyone know how to do this?