Failed to connect to Headless Virtualbox using rdesktop in Mac

I run a Linux server which is running Ubuntu-16. Now I installed Headless-VirtualBox to have Windows-10 as Guest OS within it. Everything went fine, I see the it is up as with below code -

# VBoxHeadless --startvm "windows11"Oracle VM VirtualBox Headless Interface 5.2.34_Ubuntu(C) 2008-2019 Oracle CorporationAll rights reserved.24/04/2020 21:00:02 Listening for VNC connections on TCP port 338924/04/2020 21:00:02 Listening for VNC connections on TCP6 port 5900VRDE server is listening on port 3389.

Now I went on using rdesktop in my Mac computer to complete the installation of Windows-10 as Guest in Ubuntu server. So I use below code in my Mac computer -

rdesktop xx.xx.xxx.xxx:3389Core(error): rcp_recv(), connection closed by peer

I also have checked if my Linux server is accepting communication at port 3389, it appears fine.

Can someone please guide me how to correct above error to get a GUI environment for my headlessVirtualbox?