Installing VNCserver in centOS 6.4

1.    Installing GNOME Desktop

Install a window manager in order to get a full-featured GUI desktop

[root@localhost ~] #yum groupinstall "X Window System" "Desktop"

2.    Installing TightVNC Server

For CentOS 6, the server is: tigervnc-server not:  vnc-server

[root@localhost ~] #yum install tigervnc-server

3.    Create a user and a vnc login

[root@localhost ~]# useradd tom 

[root@ localhost ~]# passwd tom 

Changing password for user tom  . 

New password: 

Retype new password: 

passwd: all authentication tokens updated successfully. 

4.    Login to new user and set vnc password

[root@localhost ~]# su - tom

[tom@localhost ~]$ vncpasswd 

Password: 

Verify: 

[tom@localhost ~]$ ls .vnc

passwd

[tom@localhost ~]$ exit

logout

5.    Start vnc

Create Xstartup Script by starting the vncserver

[root@localhost ~]#  service vncserver start

Starting VNC server: 1:tom

New 'localhost.localdomain:1 (tom)' desktop is localhost.localdomain:1

Starting applications specified in /home/tom/.vnc/xstartup

Log file is /home/tom/.vnc/localhost.localdomain:1.log 

[root@localhost ~]# su -l tom

[tom@localhost ~]$ ls .vnc

localhost.localdomain:1.log  localhost.localdomain:1.pid  passwd  xstartup

[tom@localhost ~]$ exit

logout

6.    Edit the server configuration file

Edit /etc/sysconfig/vncservers, and add the following to the end of the file.

VNCSERVERS="1:tom"

VNCSERVERARGS[1]="-geometry 1024x768"

For multiple users repeat the steps 3 to 5 and add the user to the VNCSERVERS list and add a VNCSERVERARGS[x] entry.

So for two users:

VNCSERVERS="1:tom 2:john" 

VNCSERVERARGS[1]="-geometry 1024x768" 

VNCSERVERARGS[2]="-geometry 640x480" 

7.    Open the port by editing the iptables

stop iptables

[root@localhost ~]# service iptables stop

open /etc/sysconfig/iptables

add the below lines before COMMIT

-A INPUT -p tcp -m state --state NEW -m tcp -m multiport --dports 5901:5910,6001:6010 -j ACCEPT

start iptables

root@localhost ~]# service iptables start

Install Vnc Viewer for remote accessing the desktop

1.    Download VNC Client

Now go to your Windows or Linux machine and download VNC Viewer client and install in your system to access the centos server desktop.

Download vnc viewer

2.    Connect to Remote Desktop(centos server) Using Client

After you installed the VNC Viewer client, open it you’ll get similar to below screen. Enter VNC Server IP address( IP address of centos server in which vncserver is installed) along with VNC ID (i.e 1) for user tom.

Uninstalling vncserver

[root@localhost ~]# service vncserver stop

[root@localhost~]#yum remove tigervnc-server