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#1 29-03-2015 11:43:00

tonydeb
Membre
Inscription : 29-03-2015

probleme debian 7 et vsftpd -impossible de chrooter les user

Bonjour à tous,

j'ai une vm citrix avec debian installé dessus :
root@debiantest:/etc# cat debian_version
7.8

je me co sur la machine avec putty via win 7 depuis la freebox revolution de la maison. le serveur physique est ds un datacenter ou je loue une baie.

j'ai installé vsftpd et fait les modifs d'usage sur le .conf, je n'utilise pas les virtual guest, mais simplement les local user.

je me connecte avec un local user via filezilla c ok, par contre dès que je cherche à le chrooter ds son répertoire :


Statut :    Connexion à 217.64.:21...
Statut :    Connexion établie, attente du message d'accueil...
Réponse :    220 /////////// Welcome to blah FTP service et oui tu es bien connecté en ftp
Commande :    USER olivier
Réponse :    331 Please specify the password.
Commande :    PASS ******
Réponse :    500 OOPS: vsftpd: refusing to run with writable root inside chroot()
Erreur :    Erreur critique : Impossible d'établir une connexion au serveur

bon.. du coup je retente en ajoutant : allow_writeable_chroot=YES
suivi d'un /etc/init.d/vsftpd reload

meme probleme, et du coup je tente de redémarrer vsftpd avec 

root@debiantest:/etc# /etc/init.d/vsftpd restart
Stopping FTP server: vsftpd.
Starting FTP server: vsftpd.

et la c'est l'enfumade, car même si la machine me dit starting machin sans m'afficher aucune erreur, je fais derrière un  netstat , je me rends compte que le port 21 n'est plus écouté et du coup

root@debiantest:/etc# /etc/init.d/vsftpd status
vsftpd is not running

je retente

root@debiantest:/etc# /etc/init.d/vsftpd restart
Stopping FTP server: No /usr/sbin/vsftpd found running; none killed.
vsftpd.
Starting FTP server: vsftpd.

retour de filezilla :
Statut : Connexion à 217.64.....
Statut : Échec de la tentative de connexion avec "ECONNREFUSED - Connexion refusée par le serveur".
Erreur : Impossible d'établir une connexion au serveur

mais pareil ca redémarre pas ... bref en gros le chrootage de l'user pet vsftpd me fou en l'air vsftp , je comprends pas si quelqu'un a une idée je suis preneur car je sèche la !

seul moyen de relancer vsftpd, modif la conf pr commenter la partie chroot et :


root@debiantest:/etc# /etc/init.d/vsftpd reload
Reloading FTP server configuration:
No /usr/sbin/vsftpd found running; none killed.
root@debiantest:/etc# /etc/init.d/vsftpd start
Starting FTP server: vsftpd.
root@debiantest:/etc#

la ca remarche ss soucis.

Je précise que les droit sur le le rep /home/user sont drwxr-xr--


j'ai pas mal vu d'histoire de firewall, mais je doute que ce soit ca pour mon cas vu que je me connecte avt et que c le changement du .conf avec le chroot_local_users=YES qui provoque l'erreur. si j'ai je met le allow_writable à NO ca me fait un autre message d'erreur au restart du service


Bref, je suis a deux doigt de passer sur proftp car vsftp me fatigue..si vous avez une idée, je vous en serai gré !

merci d'avance

mon fichier conf :
# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
#
# Run standalone? vsftpd can run either from an inetd or as a standalone
# daemon started from an initscript.
listen=YES
#ssl_ciphers=HIGH
#
# Run standalone with IPv6?
# Like the listen parameter, except vsftpd will listen on an IPv6 socket
# instead of an IPv4 one. This parameter and the listen parameter are mutually
# exclusive.
#listen_ipv6=YES
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# If enabled, vsftpd will display directory listings with the time
# in your local time zone. The default is to display GMT. The
# times returned by the MDTM FTP command are also affected by this
# option.
use_localtime=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format.
# Note that the default log file location is /var/log/xferlog in this case.
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
ftpd_banner=/////////// Welcome to blah FTP service et oui tu es bien connecté en ftp
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may restrict local users to their home directories. See the FAQ for
# the possible risks in this before using chroot_local_user or
# chroot_list_enable below.
chroot_local_user=YES
allow_writeable_chroot=YES
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
# (Warning! chroot'ing can be very dangerous. If using chroot, make sure that
# the user does not have write access to the top level directory within the
# chroot)
#chroot_local_user=YES
#chroot_list_enable=NO
#allow_writeable_chroot=YES
# (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# Customization
#
# Some of vsftpd's settings don't fit the filesystem layout by
# default.
#
# This option should be the name of a directory which is empty. Also, the
# directory should not be writable by the ftp user. This directory is used
# as a secure chroot() jail at times vsftpd does not require filesystem
# access.
secure_chroot_dir=/var/run/vsftpd/empty
#
# This string is the name of the PAM service vsftpd will use.
pam_service_name=vsftpd
#
# This option specifies the location of the RSA certificate to use for SSL
# encrypted connections.
rsa_cert_file=/etc/ssl/private/vsftpd.pem

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#2 29-03-2015 14:40:32

eriicj
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Lieu : Paris
Distrib. : Debian Jessie
Noyau : 3.16.0-4-amd64
(G)UI : XFCE
Inscription : 11-03-2015
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