Permessi per usare X da remoto via SSH

[balubeto]

CIAO

Ho degli utenti che si collegano via SSH ad una Linux-box . Ora, vorrei dagli anche la possibilita` di fargli usare anche il server X.Org . Su questa Linux-box, che parte in modalita` testuale, ho installato x11vnc per controllare X da remoto. Ora, come devo fare a far si` che i miei utenti, anche quando non sono in sede, possano usare il loro desktop grafico? In altre parole, quali permessi devo dare ad X per permettere cio`?

GRAZIE

CIAO

Uso la Etch Testing.

[josephdrivein]

Senza usare vnc, puoi abilitare il forward del server X nella configurazione di sshd (/etc/ssh/sshd_config) (già abilitata di default, se non hai modificato nulla) e poi avviare con:

ssh -X user@host /usr/X11/xterm

[balubeto]

Purtroppo, posso accedere alla macchina Linux soltanto da una macchina XP con il programma PuTTY.

Comunque, se ti riferisci all'opzione X11Forwarding nel file /etc/ssh/sshd_config , essa e` impostata su yes . Il fatto strano e che, quando in una shell remota di un account normale lancio, in background, il server X, mi appare questa scritta:

Using username "balubeto".
Authenticating with public key "imported-openssh-key"
Linux PLUTO 2.6.15-1-686 #2 Mon Mar 6 15:27:08 UTC 2006 i686

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
You have new mail.
Last login: Thu Apr 20 17:53:38 2006 from pippo
balubeto@PLUTO:~$ startx &
[1] 6095
balubeto@PLUTO:~$ xauth:  creating new authority file /home/balubeto/.serverauth.6095

X: user not authorized to run the X server, aborting.
giving up.
/usr/X11R6/bin/xinit:  Connection refused (errno 111):  unable to connect to X server
/usr/X11R6/bin/xinit:  No such process (errno 3):  Server error.
Couldnt get a file descriptor referring to the console

[1]+  Exit 71                 startx
balubeto@PLUTO:~$

Mentre, se mi connetto in remoto come root e scrivo in una shell:

Using username "root".
Authenticating with public key "imported-openssh-key"
Last login: Thu Apr 20 18:10:55 2006 from pippo
Linux PLUTO 2.6.15-1-686 #2 Mon Mar 6 15:27:08 UTC 2006 i686

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
PLUTO:~# startx &
[1] 6091
PLUTO:~# xauth:  creating new authority file /root/.serverauth.6091

X: warning; process set to priority -1 instead of requested priority 0

X Window System Version 6.9.0 (Debian 6.9.0.dfsg.1-6 20060403233528 David Nusinow <[email protected]>)
Release Date: 21 December 2005
X Protocol Version 11, Revision 0, Release 6.9
Build Operating System: Linux 2.6.12-1-686 i686 [ELF]
Current Operating System: Linux PLUTO 2.6.15-1-686 #2 Mon Mar 6 15:27:08 UTC 2006 i686
Build Date: 04 April 2006
        Before reporting problems, check http://wiki.X.Org
        to make sure that you have the latest version.
Module Loader present
OS Kernel: Linux version 2.6.15-1-686 (Debian 2.6.15-8) ([email protected]) (gcc version 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)) #2 Mon Mar 6 15:27:08 UTC 2006
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Thu Apr 20 18:15:40 2006
(==) Using config file: "/etc/X11/xorg.conf"
(EE) Failed to load module "synaptics" (module does not exist, 0)
(EE) No Input driver matching `synaptics'
Warning: font renderer for ".pcf" already registered at priority 0
Warning: font renderer for ".pcf.Z" already registered at priority 0
Warning: font renderer for ".pcf.gz" already registered at priority 0
Warning: font renderer for ".snf" already registered at priority 0
Warning: font renderer for ".snf.Z" already registered at priority 0
Warning: font renderer for ".snf.gz" already registered at priority 0
Warning: font renderer for ".bdf" already registered at priority 0
Warning: font renderer for ".bdf.Z" already registered at priority 0
Warning: font renderer for ".bdf.gz" already registered at priority 0
Warning: font renderer for ".pmf" already registered at priority 0
Could not init font path element unix/:7100, removing from list!

PLUTO:~# x11vnc -logfile ~/.x11vnc.log -rfbauth ~/.vnc/passwd -display :0 -forever -bg -localhost
PORT=5900
PLUTO:~#

riesco a controllare il server X dalla macchina XP.

Quindi, come mai, accedendo a Linux remotamente come un utente normale, non riesco neanche a caricare X in background?

GRAZIE

CIAO