[Gnome] accès au bureau à distance
Publié : mer. 20 avr. 2016, 12:29
Bonjour à tous;
Voilà, je travaille dans un organisme où nous avons des machines à distance et dont lesquelles nous avons installé Ubuntu 14.04.
Mon souci est bien de gérer le bureau de ces machines depuis mon ordinateur local, pour cela, j'ai suivi les étapes décrites dans le lien https://doc.ubuntu-fr.org/x11vnc
1- J'ai installé sur l'une de ces machines x11vnc via la commande :
2-J'ai généré un fichier password par la commnde :
Quand je lance l'interface x11 via la commande :
J'obtient le résultat suivant:
Et quand je scanne l'@ via la commande nmap :
J'obtient un résultat m'indiquant que le port 5900/vnc est fermé:
Pouvez-vous me donner une aide SVP?
Voilà, je travaille dans un organisme où nous avons des machines à distance et dont lesquelles nous avons installé Ubuntu 14.04.
Mon souci est bien de gérer le bureau de ces machines depuis mon ordinateur local, pour cela, j'ai suivi les étapes décrites dans le lien https://doc.ubuntu-fr.org/x11vnc
1- J'ai installé sur l'une de ces machines x11vnc via la commande :
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sudo apt-get install x11vnc
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x11vnc -storepasswd "password" ~/.vnc_passwd
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x11vnc -many -rfbauth ~/.vnc_passwd
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20/04/2016 08:27:09 passing arg to libvncserver: -rfbauth
20/04/2016 08:27:09 passing arg to libvncserver: /root/.vnc_passwd
20/04/2016 08:27:09 x11vnc version: 0.9.13 lastmod: 2011-08-10 pid: 3701
20/04/2016 08:27:09 XOpenDisplay("") failed.
20/04/2016 08:27:09 Trying again with XAUTHLOCALHOSTNAME=localhost ...
20/04/2016 08:27:09
20/04/2016 08:27:09 *** XOpenDisplay failed. No -display or DISPLAY.
20/04/2016 08:27:09 *** Trying ":0" in 4 seconds. Press Ctrl-C to abort.
20/04/2016 08:27:09 *** 1 2 3 4
No protocol specified
20/04/2016 08:27:13 XOpenDisplay(":0") failed.
20/04/2016 08:27:13 Trying again with XAUTHLOCALHOSTNAME=localhost ...
No protocol specified
20/04/2016 08:27:13 XOpenDisplay(":0") failed.
20/04/2016 08:27:13 Trying again with unset XAUTHLOCALHOSTNAME ...
No protocol specified
20/04/2016 08:27:13
20/04/2016 08:27:13 ***************************************
20/04/2016 08:27:13 *** XOpenDisplay failed (:0)
*** x11vnc was unable to open the X DISPLAY: ":0", it cannot continue.
*** There may be "Xlib:" error messages above with details about the failure.
Some tips and guidelines:
** An X server (the one you wish to view) must be running before x11vnc is
started: x11vnc does not start the X server. (however, see the -create
option if that is what you really want).
** You must use -display <disp>, -OR- set and export your $DISPLAY
environment variable to refer to the display of the desired X server.
- Usually the display is simply ":0" (in fact x11vnc uses this if you forget
to specify it), but in some multi-user situations it could be ":1", ":2",
or even ":137". Ask your administrator or a guru if you are having
difficulty determining what your X DISPLAY is.
** Next, you need to have sufficient permissions (Xauthority)
to connect to the X DISPLAY. Here are some Tips:
- Often, you just need to run x11vnc as the user logged into the X session.
So make sure to be that user when you type x11vnc.
- Being root is usually not enough because the incorrect MIT-MAGIC-COOKIE
file may be accessed. The cookie file contains the secret key that
allows x11vnc to connect to the desired X DISPLAY.
- You can explicitly indicate which MIT-MAGIC-COOKIE file should be used
by the -auth option, e.g.:
x11vnc -auth /home/someuser/.Xauthority -display :0
x11vnc -auth /tmp/.gdmzndVlR -display :0
you must have read permission for the auth file.
See also '-auth guess' and '-findauth' discussed below.
** If NO ONE is logged into an X session yet, but there is a greeter login
program like "gdm", "kdm", "xdm", or "dtlogin" running, you will need
to find and use the raw display manager MIT-MAGIC-COOKIE file.
Some examples for various display managers:
gdm: -auth /var/gdm/:0.Xauth
-auth /var/lib/gdm/:0.Xauth
kdm: -auth /var/lib/kdm/A:0-crWk72
-auth /var/run/xauth/A:0-crWk72
xdm: -auth /var/lib/xdm/authdir/authfiles/A:0-XQvaJk
dtlogin: -auth /var/dt/A:0-UgaaXa
Sometimes the command "ps wwwwaux | grep auth" can reveal the file location.
Starting with x11vnc 0.9.9 you can have it try to guess by using:
-auth guess
(see also the x11vnc -findauth option.)
Only root will have read permission for the file, and so x11vnc must be run
as root (or copy it). The random characters in the filenames will of course
change and the directory the cookie file resides in is system dependent.
See also: http://www.karlrunge.com/x11vnc/faq.html
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nmap -PN -p5900 xxx.xxx.xxx.xxx
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[code]Nmap scan report for xxx.xxx.xxx.xxx
Host is up (0.0015s latency).
PORT STATE SERVICE
5900/tcp closed vnc
Nmap done: 1 IP address (1 host up) scanned in 0.27 seconds