Fedora 21
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Configure VNC Server
Install VNC Server to connect with GUI from remote client. This example is based on KDE Desktop Environment.
[1] Install VNC Server and start it like follows.
[root@dlp ~]#
yum -y install tigervnc-server
[root@dlp ~]#
su - fedora
# switch to a user you'd like to config VNC

[fedora@dlp ~]$
# set VNC password

# input

# confirm
# run with diplay number '1', screen resolution '800x600', color depth '24'

[fedora@dlp ~]$
vncserver :1 -geometry 800x600 -depth 24

Install VNC viewer on client computer next. Download from the site below to install UltraVNC.
After installing UltraVNC, click "UltraVNC Viewer" to run, then, following screen is shown. Input [(Server's hostname or IP address):(display number)] like following example and then click "Connect" button.
[3] Password is required. Input VNC password you set in the section [1].
[4] Just connected.