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тАО07-04-2004 08:01 PM
тАО07-04-2004 08:01 PM
dislay problem
i think i have an X display problem on my linux 9 system , that i can not open my VNC veiwer for the linux server from a win2k system , i do not know how to check the problem and how to solve it.
BR,
Fadia
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тАО07-04-2004 09:13 PM
тАО07-04-2004 09:13 PM
Re: dislay problem
Running VNC as a server on linux, you will need to have two things :
. VNC service running (as root, "service vnc start" or something like that)
. 5900 port open. It is the default port. If you do a little port restrictions, you may have lock it.
Regards,
Fred
"Reality is just a point of view." (P. K. D.)
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тАО07-04-2004 09:28 PM
тАО07-04-2004 09:28 PM
Re: dislay problem
by how can i check that the port is opened for it or not , i take a look at the /etc/services but i can not recognize any thing
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тАО07-04-2004 09:36 PM
тАО07-04-2004 09:36 PM
Re: dislay problem
to see if port is open you could look at the output from a netstat, you could also try telnet localhost 5900, and see what answers, and you could also use nmap or nmap-fe if you possess a GUI to do a portscan on your host and see what ports you have open.
Also are you sure of the syntax you are using to initiate the connections, are you specifying the screen number for the VNC client??
hope this helps
regards
Matt
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тАО07-04-2004 10:17 PM
тАО07-04-2004 10:17 PM
Re: dislay problem
whould you explain more deeply, i do not really understand what to do and how to check
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тАО07-05-2004 12:56 AM
тАО07-05-2004 12:56 AM
Re: dislay problem
Matt proposes 3 ways to see if port is open :
. from the machine, type "netstat -tan". It will give you the tcp ports the machine is listening on. If you don't have 5900, VNC server is not launched, or not on common port.
. Try to issue "telnet host 5900". If a communication is established on port 5900, somebody's listening...
. Use a linux utility called nmap. "nmap host" gives you the open ports on host.
Note that if you run this tests from the macine successfully the ports are open. If you run it unsuccessfully from distant machine, FW is probably blocking you.
If you want to run tests from distant host, run tests from a machine in the same subnet, and physically near from the one VNC doesn't work.
Regards,
Fred
"Reality is just a point of view." (P. K. D.)
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тАО07-05-2004 01:48 AM
тАО07-05-2004 01:48 AM
Re: dislay problem
then enter the hostname and click scan.
once you have decided if 5900 is responding, then you need to specify the 'screen' number to the client.
HTH
Matt
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тАО07-05-2004 02:03 AM
тАО07-05-2004 02:03 AM
Re: dislay problem
When you connect from VNC client to Linux server, a new display is created for the session (i.e : you will connect to host:x.0 where x may not be 0). To confirm the problem resides here, you may need to put a "xhost +" command on display opening. This may be done within a file called /etc/X11/xdm/GiveConsole (This is only a test, and you must not leave this).
On the other hand, it could still be a FW problem, so can you try to connect from a machine in the same subnet where the server is ?
One other point : You said "linux 9". I use slackware 9. This is also a linux distribution, in its 9th release, but not redhat... Redhat is not linux.
Regards,
Fred
"Reality is just a point of view." (P. K. D.)
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тАО07-27-2004 10:04 AM
тАО07-27-2004 10:04 AM
Re: dislay problem
RealVNC (www.realvnc.com) has really good documentation on how to install their latest version. I haven't tried using it with any other release other than Fedora Core2, but the newer version will allow you to connect to screen :0.
If you have an older version of VNC, then it is likely that you should be pointing your desktop VNC to port 5901, not 5900. so it would be "IP.AD.DR.ESS:5901".
You should also have run "vncpasswd" as the user you want to run the VNC server as, and then run "vncserver :1" after that.
Hope this helps!
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тАО07-28-2004 10:44 PM
тАО07-28-2004 10:44 PM
Re: dislay problem
Do you specify correctly display number?
hostname:1 <- according to your server setting??
Can you access server by ping?