VRDP is a backwards-compatible extension to Microsoft’s Remote Desktop Protocol (RDP). Typically graphics updates and audio are sent from the remote machine to the client, while keyboard and mouse events are sent back.
You can use any standard RDP viewer, such as the one that comes with Microsoft Windows (typically found under “Accessories” -> “Communication” -> “Remote Desktop Connection”) or, on Linux system, the standard open-source rdesktop program
to connect to the virtual machine remotely.
You should use the IP address of your host system as the server address. The VRDP server uses the standard RDP TCP port 3389 by default. The port can be changed either in the GUI VM settings or with VBoxManage modifyvm command -vrdpport
option. Note that only one machine can use a given port at a time. Also on Windows hosts the default RDP port (3389) could be already used by the Windows RDP server,in this case you should choose another port for your VM(s).
With VirtualBox, the graphical user interface, the VRDP server is disabled by default, but can easily be enabled on a per-VM basis either with the VirtualBox GUI or with VBoxManage
VBoxManage modifyvm <vmname> -vrdp on