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Q. How to install VNC on CentOS?

A. Installation VNC on CentOS 6.5

This guide explains how to configure VNC-server in CentOS 6.5 server. It is a very convinient way of administrating the CentOS 6.5 with the help of GUI(Graphics User Interface). The GUI can be access any where with the help of the VNC-client on any OS. The basic condition is that the connecting OS must have VNC-clients installed in it.

We must log in the system with root, & now we will be install the VNC-server.

# yum groupinstall Desktop

Further install

# yum install gnome-core xfce4 firefox
# yum install tigervnc-server

Now make the service on after every reboot

# chkconfig vncserver on

Adding VNC user
We will use user=myuser it will differ in your case. You can use any username for the same.

# useradd myuser

Now we will assign the vncpassword for the user with the user we just created before as:

# su - myuser
# vncpasswd

[root@server1 ~] # su - myuser
[myuser@server1 ~]$ vncpasswd
[myuser@server1 ~]$

Now I will make the configuration file for the vncserver by creating file as follows:

# vi /etc/sysconfig/vncservers

VNCSERVERARGS[1]="-geometry 800x600"

Here your port comes to be 5901 & 800x600 resolution for the VNC client, you can choose resolution of your own choice.

Now we will restart the VNC server service as root user:

# service vncserver restart

& Finally reboot the machine.

# reboot

Setup the iptables to accept the VNC connection

# sudo iptables -I INPUT 5 -m state --state NEW -m tcp -p tcp -m multiport --dports 5901:5903,6001:6003 -j ACCEPT
# sudo service iptables save
# sudo service iptables restart

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