Portál AbcLinuxu, 11. května 2025 10:47
29.10.2013 21:08
Jendа | skóre: 78
| blog: Jenda
| JO70FB
sid@sid-GX700:~$ x11vnc
** WARNING ** WARNING ** WARNING ** WARNING **
YOU ARE RUNNING X11VNC WITHOUT A PASSWORD!!
This means anyone with network access to this computer
may be able to view and control your desktop.
If you did not mean to do this Press CTRL-C now!
You can create an x11vnc password file by running:
x11vnc -storepasswd password /path/to/passfile
or x11vnc -storepasswd /path/to/passfile
or x11vnc -storepasswd
(the last one will use ~/.vnc/passwd)
and then starting x11vnc via:
x11vnc -rfbauth /path/to/passfile
an existing ~/.vnc/passwd file from another VNC
application will work fine too.
You can also use the -passwdfile or -passwd options.
(note -passwd is unsafe if local users are not trusted)
Make sure any -rfbauth and -passwdfile password files
cannot be read by untrusted users.
Use x11vnc -usepw to automatically use your
~/.vnc/passwd or ~/.vnc/passwdfile password files.
(and prompt you to create ~/.vnc/passwd if neither
file exists.) Under -usepw, x11vnc will exit if it
cannot find a password to use.
Even with a password, the subsequent VNC traffic is
sent in the clear. Consider tunnelling via ssh(1):
http://www.karlrunge.com/x11vnc/#tunnelling
Or using the x11vnc SSL options: -ssl and -stunnel
Please Read the documention for more info about
passwords, security, and encryption.
http://www.karlrunge.com/x11vnc/faq.html#faq-passwd
To disable this warning use the -nopw option, or put
'nopw' on a line in your ~/.x11vncrc file.
29/10/2013 20:20:57 x11vnc version: 0.9.13 lastmod: 2011-08-10 pid: 2386
29/10/2013 20:20:57 XOpenDisplay("") failed.
29/10/2013 20:20:57 Trying again with XAUTHLOCALHOSTNAME=localhost ...
29/10/2013 20:20:57
29/10/2013 20:20:57 *** XOpenDisplay failed. No -display or DISPLAY.
29/10/2013 20:20:57 *** Trying ":0" in 4 seconds. Press Ctrl-C to abort.
29/10/2013 20:20:57 *** 1 2 3 4
Invalid MIT-MAGIC-COOKIE-1 key29/10/2013 20:21:01 XOpenDisplay(":0") failed.
29/10/2013 20:21:01 Trying again with XAUTHLOCALHOSTNAME=localhost ...
Invalid MIT-MAGIC-COOKIE-1 key29/10/2013 20:21:01 XOpenDisplay(":0") failed.
29/10/2013 20:21:01 Trying again with unset XAUTHLOCALHOSTNAME ...
Invalid MIT-MAGIC-COOKIE-1 key29/10/2013 20:21:01
29/10/2013 20:21:01 ***************************************
29/10/2013 20:21:01 *** 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
Klient: ssh -L 5900:localhost:5900 -C -c blowfish alois@ipadresa Po přihlášení na server: x11vnc -noxrecord -noxfixes -noxdamage -nomodtweak -display :0 -geometry 1000x760 -localhost Klient: vncviewer -encodings Tight -compresslevel 8 -quality 1 localhost:5900 Nebo použiješ jako klienta program "ssvnc", popřípadě "Remmina".
29.10.2013 22:10
Jendа | skóre: 78
| blog: Jenda
| JO70FB
Podle mě nemá cestu k Xauthority.x11vnc -noxrecord -noxfixes -noxdamage -nomodtweak -display :0 -geometry 1000x760 -localhost
x11vnc -display :0 -localhost -auth /var/run/gdm/auth-for-gdm-neco/databasekde "/var/run/gdm/auth-for-gdm-neco/database" je cesta k souboru "magic cookie" - umístění záleží na druhu grafického správce přihlašování a distribuci linuxu.
#! /bin/bash
RemoteHost="server"
echo "Testuji, zda běží náš VNC server"
vncprocess=`ssh $RemoteHost ps ax | grep [m]ydesktop`
if [ "$vncprocess" == "" ]; then
echo "VNC server neběží, spouštím jej"
ssh $RemoteHost vncserver -geometry 1180x990 -desktop mydesktop
sleep 3s
echo "Naběhl server ?"
vncprocess=`ssh $RemoteHost ps ax | grep [m]ydesktop`
if [ "$vncprocess" == "" ]; then
echo " Spuštění vzdáleného serveru se nezdařilo"
exit 1
fi
fi
vncprocess=${vncprocess##*rfbport }
vncport=${vncprocess%% -*}
echo "spouštím vncviewer na portu /*$vncport*/"
vncviewer -passwd ~/.vnc/mypass -encodings zlib -compresslevel 4 -via $RemoteHost localhost::"$vncport"
#! /bin/bash
dbus-launch vncserver -desktop mydesktop -geometry 1100x900#!/bin/sh
#xrdb $HOME/.Xresources
#xsetroot -solid grey
#xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
startkde &
Starting applications specified in /home/milan/.vnc/xstartup
Log file is /home/milan/.vnc/server:2.log
Tiskni
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