There are many remote connection methods (connecting to a Linux machine) In ubuntu.
SSH: a typical remote connection using the command line method. The full character is not suitable for desktop users.
VNC: Remote Desktop and some third-party remote connections in windows are similar to pcAnywhere, but the disadvantage is that
The operation desktop screenshot is completely transmitted without compression optimization, and the transmission is slow. Multi-session connection is not supported.
NX: SSH-based Remote Desktop Connection that supports multiple sessions. It is similar to the Remote Desktop in windows and delivers fast transmission. So far, I think it is best to use one.
Server to install nxclient, nxnode, nxserver. Client to install nxclient. Download http://www.nomachine.com/download-package.php? Prod_id = 1, 3413
SDM: The selected logon function provided by ubuntu. It has not been tested ....