Problemi con x11vnc e GDM

[balubeto]

CIAO

Volendo controllare da remoto una macchina Linux con GDM attivo e volendo logandomi da remoto mediante tale interfaccia grafica, ho modificato i file /etc/gdm/gdm.conf e /etc/inetd.conf in questo modo:

PLUTO:~# cat /etc/gdm/gdm.conf                                                                                              
# GDM Configuration Customization file.
#
# This file is the appropriate place for specifying your customizations to the
# GDM configuration.   If you run gdmsetup, it will automatically edit this
# file for you and will cause the daemon and any running GDM GUI programs to
# automatically update with the new configuration.  Not all configuration
# options are supported by gdmsetup, so to modify some values it may be
# necessary to modify this file directly by hand.
#
# Older versions of GDM used the "gdm.conf" file for configuration.  If your
# system has an old gdm.conf file on the system, it will be used instead of
# this file - so changes made to this file will not take effect.  Consider
# migrating your configuration to this file and removing the gdm.conf file.
#
# To hand-edit this file, simply add or modify the key=value combination in
# the appropriate section in the template below.  Refer to the comments in the
# /usr/share/gdm/defaults.conf file for information about each option.  Also
# refer to the reference documentation.
#
# If you hand edit a GDM configuration file, you should run the following
# command to get the GDM daemon to notice the change.  Any running GDM GUI
# programs will also be notified to update with the new configuration.
#
# gdmflexiserver --command="UPDATE_CONFIG <configuration key>"
#
# e.g, the "Enable" key in the "[debug]" section would be "debug/Enable".
#
# You can also run gdm-restart or gdm-safe-restart to cause GDM to restart and
# re-read the new configuration settings.  You can also restart GDM by sending
# a HUP or USR1 signal to the daemon.  HUP behaves like gdm-restart and causes
# any user session started by GDM to exit immediately while USR1 behaves like
# gdm-safe-restart and will wait until all users log out before restarting GDM.
#
# For full reference documentation see the gnome help browser under
# GNOME|System category.  You can also find the docs in HTML form on
# http://www.gnome.org/projects/gdm/
#
# NOTE: Lines that begin with "#" are considered comments.
#
# Have fun!

[daemon]
GtkModulesList=gail:atk-bridge:/usr/lib/gtk-2.0/modules/libkeymouselistener:/usr/lib/gtk-2.0/modules/libdwellmouselistener
AddGtkModules=true
RemoteGreeter=/usr/lib/gdm/gdmgreeter

[security]
AllowRoot=true
DisallowTCP=false
AllowRemoteRoot=true

[xdmcp]
Enable=true
HonorIndirect=false

[gui]

[greeter]
Browser=true
Include=root,balubeto
Exclude=

[chooser]

[debug]
Enable=true

# Note that to disable servers defined in the defaults.conf file (such as
# 0=Standard, you must put a line in this file that says 0=inactive, as
# described in the Configuration section of the GDM documentation.
#
[servers]

# Also note, that if you redefine a [server-foo] section, then GDM will
# use the definition in this file, not the defaults.conf file.  It is
# currently not possible to disable a [server-foo] section defined
# in the defaults.conf file.
#
PLUTO:~# 
PLUTO:~# cat /etc/inetd.conf                                                                                              
# /etc/inetd.conf:  see inetd(8) for further informations.
#
# Internet superserver configuration database
#
#
# Lines starting with "#:LABEL:" or "#<off>#" should not
# be changed unless you know what you are doing!
#
# If you want to disable an entry so it isn't touched during
# package updates just comment it out with a single '#' character.
#
# Packages should modify this file by using update-inetd(8)
#
# <service_name> <sock_type> <proto> <flags> <user> <server_path> <args>
#
#:INTERNAL: Internal services
#discard                stream  tcp     nowait  root    internal
#discard                dgram   udp     wait    root    internal
#daytime                stream  tcp     nowait  root    internal
#time           stream  tcp     nowait  root    internal

#:«»STANDARD: These are standard services.

5900    stream  tcp     nowait  nobody  /usr/bin/x11vnc x11vnc -inetd -desktop=Server -query localhost -forever

#:BSD: Shell, login, exec and talk are BSD protocols.

#:MAIL: Mail, news and uucp services.

#:INFO: Info services
ident           stream  tcp     wait    identd  /usr/sbin/identd        identd

#:BOOT: TFTP service is provided primarily for booting.  Most sites
#       run this only on machines acting as "boot servers."

#:RPC: RPC based services

#:HAM-RADIO: amateur-radio services

#:OTHER: Other services

Ora, pero`, mi accorgo che, riavviando tale macchina, il server x11vnc non viene caricato. Infatti:

PLUTO:~# ps axu | grep x11vnc | grep -v grep                                                                                
PLUTO:~# netstat -a | grep x11vnc | grep -v grep                                                                            
PLUTO:~# netstat -a | grep 5900 | grep -v grep                                                                              
tcp        0      0 *:5900                  *:*                     LISTEN     
PLUTO:~#

Come mai?

GRAZIE

CIAO

P.S; Uso la Debian Etch Testing.

[gurutech]

perchè giustamente il servizio che parte è inetd
inetd ti apre la porta 5900, come puoi vedere con netstat
quando qualcuno prova a contattare la porta 5900 inetd fa partire x11vnc
se tutti i parametri di x11vnc sono giusti e le conf sono giuste dovresti riuscire a collegarti, ma non conosco abbastanza x11vnc da dirti di più

è così che funziona inetd: ti permette di risparmiare spazio in memoria perchè non avvii un servizio sinchè non ti serve.

[kingvi]

Tieni segui questa guida.

[balubeto]

La mia macchina Server ha il server X.Org ed GDM sempre attivati e caricati fin dall'avvio del Server.

Ho notato una cosa:

Se metto la direttiva KillInitClients=false a /etc/gdm/gdm.conf e, poi, se aggiungo al file /etc/gdm/Init/Default il comando /usr/bin/x11vnc -logfile /var/log/x11vnc.log -rfbauth /root/.vnc/passwd -forever -bg e, poi, riavvio il server, riesco a collegami in remoto e, finalmente, riesco a vedere il mio caro GDM su una finestra di Windows XP e sulla macchina Server mi crea il file di log.

Mentre, se metto tale comando nel file /etc/inetd.conf nel modo seguente:

PLUTO:~# cat /etc/inetd.conf
# /etc/inetd.conf:  see inetd(8) for further informations.
#
# Internet superserver configuration database
#
#
# Lines starting with "#:LABEL:" or "#<off>#" should not
# be changed unless you know what you are doing!
#
# If you want to disable an entry so it isn't touched during
# package updates just comment it out with a single '#' character.
#
# Packages should modify this file by using update-inetd(8)
#
# <service_name> <sock_type> <proto> <flags> <user> <server_path> <args>
#
#:INTERNAL: Internal services
#discard                stream  tcp     nowait  root    internal
#discard                dgram   udp     wait    root    internal
#daytime                stream  tcp     nowait  root    internal
#time           stream  tcp     nowait  root    internal

#:STANDARD: These are standard services.

5900    stream  tcp     nowait  nobody  /usr/bin/x11vnc x11vnc -inetd -logfile /var/log/x11vnc.log -rfbauth /root/.vnc/passwd -forever -bg

#:BSD: Shell, login, exec and talk are BSD protocols.

#:MAIL: Mail, news and uucp services.

#:INFO: Info services
ident           stream  tcp     wait    identd  /usr/sbin/identd        identd

#:BOOT: TFTP service is provided primarily for booting.  Most sites
#       run this only on machines acting as "boot servers."

#:RPC: RPC based services

#:HAM-RADIO: amateur-radio services

#:OTHER: Other services

e, poi, riavvio il Server, il viewer sulla macchina di Windows non riesce a collegarsi al server e, se vado su Server, noto che il server x11vnc non mi ha creato il file log il che sta a significare, per me, che, quando il viewer ha tentato la connessione con il server x11vnc, Linux non riesce a caricare il server VNC. Come mai?

GRAZIE

CIAO