Forum Mihai Moldovan

Install the necessary packages for VNC Server

[root @ centos ~]$ yum install vnc-server
[root @ centos ~]$ yum groupinstall Desktop

Add the users we want to receive access to the VNC Server

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[root @ centos ~]$ sudo su -
[root @ centos ~]$ useradd user1
[root @ centos ~]$ useradd user2
[root @ centos ~]$ useradd user3
[root @ centos ~]$ passwd user1
[root @ centos ~]$ passwd user2
[root @ centos ~]$ passwd user3

Edit configuration file for VNC Server and add the settings for users

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[root @ centos ~]$ vi /etc/sysconfig/vncservers
VNCSERVERS="1:user1 2:user2 3:user3"
VNCSERVERARGS[1]="-geometry 640x480"
VNCSERVERARGS[2]="-geometry 640x480"
VNCSERVERARGS[3]="-geometry 800x600"

Add user1 password to VNC Server

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[root @ centos ~]$ su - user1
[user1 @ centos ~]$ vncpasswd
[user1 @ centos ~]$ cd .vnc
[user1 @ centos .vnc]$ ls -a
passwd

Start and Stop the VNC server to check for errors

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[root @ centos ~]$ /sbin/service vncserver start
[root @ centos ~]$ /sbin/service vncserver stop

Add the VNC Server to startup

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[root @ centos ~]$ /sbin/chkconfig vncserver on

Check if the configuration file for the user (in our case it is user1) is created
In this case the configuration presents a gnome session

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[root @ centos ~]$ nano /home/user1/xstartup
#!/bin/sh
[ -r /etc/sysconfig/i18n ] && . /etc/sysconfig/i18n
export LANG
export SYSFONT
vncconfig -iconic &
vncconfig SecurityTypes=RA2
vncconfig RSA_Private_Key_File=$HOME/.vnc/private.key
vncconfig UserPasswdVerifier=UnixAuth
vncconfig AllowedUsers=cio:f
vncconfig AllowedGroups=staff:d
vncconfig QueryConnect=2
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
OS=`uname -s`
if [ $OS = 'Linux' ]; then
case "$WINDOWMANAGER" in
*gnome*)
if [ -e /etc/SuSE-release ]; then
PATH=$PATH:/opt/gnome/bin
export PATH
fi
;;
esac
fi
if [ -x /etc/X11/xinit/xinitrc ]; then
exec /etc/X11/xinit/xinitrc
fi
if [ -f /etc/X11/xinit/xinitrc ]; then
exec sh /etc/X11/xinit/xinitrc
fi
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
#xsetroot -solid grey
#xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
#twm &
exec gnome-session

Add rule in firewall to allow connection to VNC Server

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[root @ centos ~]$ iptables -A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports 5900,5901 -j ACCEPT

Start VNC Server

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[root @ centos ~]$ /sbin/service vncserver start

Forum Mihai Moldovan

VNC Server configuration

VNC Server configuration