VNC Server Configuration in RHEL6

Server side:

#vim /etc/sysconfig/vncservers

VNCSERVERS="1:visitor 2:student" (Edit the line in the above file)
Create 2 users (visitor & student with some password)

Login to visitor & student users and set vncpasswd (6 chars minimum)

#service vncserver restart

Client side:

#vncviewer -via visitor@server.example.com localhost:2