vnc viewer not able to connect to host.

Hi,

I have installed VNC server on OVM OEL 6.8. 

[root@~]# rpm -qa |grep vnc

tigervnc-server-module-1.1.0-18.el6.x86_64

tigervnc-server-1.1.0-18.el6.x86_64

tigervnc-1.1.0-18.el6.x86_64

[root@ ~]#

[root@ddb1525 ~]# ps -ef | grep vnc

root      3608     1  0 02:56 ?        00:00:00 /usr/bin/Xvnc :2 -desktop ddb1525.centricoracle.com:2 (root) -auth /root/.Xauthority -geometry 1024x768 -rfbwait 30000 -rfbauth /root/.vnc/passwd -rfbport 5902 -fp catalogue:/etc/X11/fontpath.d -pn

root      3618     1  0 02:56 ?        00:00:00 vncconfig -iconic

root      4401  4380  0 03:57 pts/0    00:00:00 grep vnc

[root@ddb1525 ~]#

I can see the vnc server running bit not able to connect through vnc viewer to the host "timeout waiting for a response from the host"..

Thanks.