The tip below is for accessing CDE or Gnome from a remote server, the solution uses SSH protocol as the connection layer for security reasons.

If you are using cygwin on Windows to access CDE or Gnome,
First you connect with the below commend from one window, this will activate the ssh forwarding.

ssh username@remote_host -L 7100:remote_host:7100

Next you connect and forwerd the X11 (CDE or Gnome, etc).

XWin.exe -clipboard -fullscreen  -fp tcp/localhost:7100 (new shell)
#
ssh -X username@remote_host /usr/dt/bin/Xsession (new shell)