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Here is how to install and configure a VNC server on Fedora Linux 13.

First, Install TigerVNC:

> su -
> yum install tigervnc-server

Log into root and install the TigerVNC package.

Configure VNC Server:

> echo 'VNCSERVERS="1:mnguyen"' >> /etc/sysconfig/vncservers
> echo 'VNCSERVERARGS[1]="-geometry 1024×768 -depth 16"' >> /etc/sysconfig/vncservers

Edit the vncservers configuration file and set up a user pair. Note the element numeral 1 which refers to a user pair. If you set up a second user, say snguyen, then use echo 'VNCSERVERS="2:snguyen"' >> /etc/sysconfig/vncservers and echo 'VNCSERVERARGS[2]="-geometry 1024×768 -depth 16"' >> /etc/sysconfig/vncservers.

Set VNC Password:

> su – mnguyen
> vncpasswd

Log into each user associated with a VNC server and configure a VNC password.

Finally, Start VNC Server:

> exit
> chkconfig --level 2345 vncserver on
> /etc/init.d/vncserver start

Exit back to root and start the VNC server daemon. Each VNC server has a unique port, 590#, associated with the user pair element defined in the vncservers configuration file. So the VNC server for user mnguyen is on port 5901 and the VNC server for user snguyen is on port 5902.

Update February 13, 2011:

> sestatus

SELinux status: enabled
SELinuxfs mount: /selinux
Current mode: enforcing
Mode from config file: enforcing
Policy version: 24
Policy from config file: targeted

> setsebool -P sshd_forward_ports 1

If SELinux policy is enforcing, then you must enable the sshd_forward_ports boolean.