On 2/26/2014 16:25, Patrick Dupre wrote:
Can you telnet to the VNC port on the server?
How I do it?
I'm not sure telnet is the way to go because if memory serves it isn't
installed by default. The best way to check is to use a port scanner to
see the status of the port on the target system. The tool I use is
called "nmap". If you are using a Windows machine to vnc into the
target system, you can download nmap from here:
http://nmap.org/download.html
If you are using Fedora to vnc to the target, then you can see if nmap
is installed by running this as root from the command prompt:
yum info nmap
If it isn't installed, you can install it by using the following command:
yum install nmap
Once it is installed, you can run the following command on the source
system to see if the target system has the port open:
nmap -v -n -P0 -p5900-5910 192.168.1.10
Just substitute the IP address of your target system for the address
"192.168.1.10" in the example above. A result of "closed" means the
port is being actively blocked and a message is being sent to tell you
that it is. A result of "filtered" means that the port is not
responding to say whether it is open or not. Once a result of "open"
means that you can access the service listening on the port.
I gave a range of 5900-5910 in the example above because you can
configure the vnc service to listen on a number of different ports. That
what the ":1" or ":2" mean when you set up the entries in the
/etc/sysconfig/vncserver file. This also means that to connect to a vnc
server set up for ":2" on the example IP address above you need to use
"192.168.1.10:2" in the vncviewer and the nmap output from probing the
target system should show that port 5902 is open.
Let us know what you find.
Tom
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