KRDC
Remote Desktop Connection client
KRDC is a client application that allows you to view or even control the desktop session on another machine that is running a compatible server. VNC and RDP is supported.
The KDE Remote Desktop Connection client can view and control a desktop session running on another system. It can connect to Windows Terminal Servers using RDP and many other platforms using VNC/RFB. . This package is part of the KDE networking module.
How to install KRDC in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install krdc in Ubuntu
sudo apt install krdc