Is the VNC server running OK?
You can check it by telnet command like this:
Code:
[admon@org /home/monitor/conf]$ telnet 181.181.181.181 5902
Trying 181.181.181.181...
Connected to 181.181.181.181.
Escape character is '^]'.
RFB 003.008
^]quit
telnet> quit
Connection closed.
Pay attention to the output when connected.