VSFTPD.CONF(5) VSFTPD.CONF(5)
NAME
vsftpd.conf, the config file for vsftpd
DESCRIPTION
vsftpd.conf may be used to control various aspects of
vsftpd's behaviour. By default, vsftpd looks for this file
at the location /etc/vsftpd.conf. However, you may over
ride this by specifying a command line argument to vsftpd.
The command line argument is the pathname of the configu
ration file for vsftpd. This behaviour is useful because
you may wish to use an advanced inetd such as xinetd to
launch vsftpd with different configuration files on a per
virtual host basis.
FORMAT
The format of vsftpd.conf is very simple. Each line is
either a comment or a directive. Comment lines start with
a # and are ignored. A directive line has the format:
option=value
It is important to note that it is an error to put any
space between the option, = and value.
Each setting has a compiled in default which may be modi
fied in the configuration file.
BOOLEAN OPTIONS
Below is a list of boolean options. The value for a
boolean option may be set to YES or NO.
anon_mkdir_write_enable
If set to YES, anonymous users will be permitted to
create new directories under certain conditions.
For this to work, the option write_enable must be
activated, and the anonymous ftp user must have
write permission on the parent directory.
Default: NO
anon_other_write_enable
If set to YES, anonymous users will be permitted to
perform write operations other than upload and cre
ate directory, such as deletion and renaming. This
is generally not recommended but included for com
pleteness.
Default: NO
anon_upload_enable
If set to YES, anonymous users will be permitted to
upload files under certain conditions. For this to
work, the option write_enable must be activated,
and the anonymous ftp user must have write permis
sion on desired upload locations.
Default: NO
anon_world_readable_only
When enabled, anonymous users will only be allowed
to download files which are world readable. This is
recognising that the ftp user may own files, espe
cially in the presence of uploads.
Default: YES
anonymous_enable
Controls whether anonymous logins are permitted or
not. If enabled, both the usernames ftp and anony
mous are recognised as anonymous logins.
Default: YES
ascii_download_enable
When enabled, ASCII mode data transfers will be
honoured on downloads.
Default: NO
ascii_upload_enable
When enabled, ASCII mode data transfers will be
honoured on uploads.
Default: NO
async_abor_enable
When enabled, a special FTP command known as "async
ABOR" will be enabled. Only ill advised FTP
clients will use this feature. Addtionally, this
feature is awkward to handle, so it is disabled by
default. Unfortunately, some FTP clients will hang
when cancelling a transfer unless this feature is
available, so you may wish to enable it.
Default: NO
chown_uploads
If enabled, all anonymously uploaded files will
have the ownership changed to the user specified in
the setting chown_username. This is useful from an
administrative, and perhaps security, standpoint.
Default: NO
chroot_list_enable
If activated, you may provide a list of local users
who are placed in a chroot() jail in their home
directory upon login. The meaning is slightly dif
ferent if chroot_local_user is set to YES. In this
case, the list becomes a list of users which are
NOT to be placed in a chroot() jail. By default,
the file containing this list is
/etc/vsftpd.chroot_list, but you may override this
with the chroot_list_file setting.
Default: NO
chroot_local_user
If set to YES, local users will be placed in a
chroot() jail in their home directory after login.
Warning: This option has security implications,
especially if the users also have shell access.
Only enable if you know what you are doing.
Default: NO
connect_from_port_20
This controls whether PORT style data connections
use port 20 (ftp-data) on the server machine. For
security reasons, some clients may insist that this
is the case. Conversely, disabling this option
enables vsftpd to run with slightly less privilege.
Default: NO (but the sample config file enables it)
deny_email_enable
If activated, you may provide a list of anonymous
password e-mail responses which cause login to be
denied. By default, the file containing this list
is /etc/vsftpd.banned_emails, but you may override
this with the banned_email_file setting.
Default: NO
dirmessage_enable
If enabled, users of the FTP server can be shown
messages when they first enter a new directory. By
default, a directory is scanned for the file .mes
sage, but that may be overridden with the configu
ration setting message_file.
Default: NO (but the sample config file enables it)
guest_enable
If enabled, all non-anonymous logins are classed as
"guest" logins. A guest login is remapped to the
user specified in the guest_username setting.
Default: NO
local_enable
Controls whether local logins are permitted or not.
If enabled, normal user accounts in /etc/passwd may
be used to log in.
Default: NO
log_ftp_protocol
When enabled, all FTP requests and responses are
logged, providing the option xferlog_std_format is
not enabled. Useful for debugging.
Default: NO
ls_recurse_enable
When enabled, this setting will allow the use of
"ls -R". This is a minor security risk, because a
ls -R at the top level of a large site may consume
a lot of resources.
Default: NO
one_process_model
If you have a Linux 2.4 kernel, it is possible to
use a different security model which only uses one
process per connection. It is a less pure security
model, but gains you performance. You really don't
want to enable this unless you know what you are
doing, and your site supports huge numbers of
simultaneously connected users.
Default: NO
pasv_enable
Set to NO if you want to disallow the PASV method
of obtaining a data connection.
Default: YES
pasv_promiscuous
Set to YES if you want to disable the PASV security
check that ensures the data connection originates
from the same IP address as the control connection.
Only enable if you know what you are doing! The
only legitimate use for this is in some form of
secure tunnelling scheme.
Default: NO
port_enable
Set to NO if you want to disallow the PORT method
of obtaining a data connection.
Default: YES
setproctitle_enable
If enabled, vsftpd will try and show session status
information in the system process listing. In other
words, the reported name of the process will change
to reflect what a vsftpd session is doing (idle,
downloading etc). You probably want to leave this
off for security purposes.
Default: NO
text_userdb_names
By default, numeric IDs are shown in the user and
group fields of directory listings. You can get
textual names by enabling this parameter. It is off
by default for performance reasons.
Default: NO
userlist_deny
This option is examined if userlist_enable is acti
vated. If you set this setting to NO, then users
will be denied login unless they are explicitly
listed in the file specified by userlist_file.
When login is denied, the denial is issued before
the user is asked for a password.
Default: YES
userlist_enable
If enabled, vsftpd will load a list of usernames,
from the filename given by userlist_file. If a
user tries to log in using a name in this file,
they will be denied before they are asked for a
password. This may be useful in preventing cleart
ext passwords being transmitted. See also
userlist_deny.
Default: NO
write_enable
This controls whether any FTP commands which change
the filesystem are allowed or not. These commands
are: STOR, DELE, RNFR, RNTO, MKD, RMD, APPE and
SITE.
Default: NO
xferlog_enable
If enabled, a log file will be maintained
detailling uploads and downloads. By default, this
file will be placed at /var/log/vsftpd.log, but
this location may be overridden using the configu
ration setting xferlog_file.
Default: NO (but the sample config file enables it)
xferlog_std_format
If enabled, the transfer log file will be written
in standard xferlog format, as used by wu-ftpd.
This is useful because you can reuse existing
transfer statistics generators. The default format
is more readable, however.
Default: NO
NUMERIC OPTIONS
Below is a list of numeric options. A numeric option must
be set to a non negative integer. Octal numbers are sup
ported, for convenience of the umask options. To specify
an octal number, use 0 as the first digit of the number.
accept_timeout
The timeout, in seconds, for a remote client to
establish connection with a PASV style data connec
tion.
Default: 60
anon_max_rate
The maximum data transfer rate permitted, in bytes
per second, for anonymous clients.
Default: 0 (unlimited)
anon_umask
The value that the umask for file creation is set
to for anonymous users. NOTE! If you want to spec
ify octal values, remember the "0" prefix otherwise
the value will be treated as a base 10 integer!
Default: 077
connect_timeout
The timeout, in seconds, for a remote client to
respond to our PORT style data connection.
Default: 60
data_connection_timeout
The timeout, in seconds, which is roughly the maxi
mum time we permit data transfers to stall for with
no progress. If the timeout triggers, the remote
client is kicked off.
Default: 300
ftp_data_port
The port from which PORT style connections origi
nate (as long as the poorly named con
nect_from_port_20 is enabled).
Default: 20
idle_session_timeout
The timeout, in seconds, which is the maximum time
a remote client may spend between FTP commands. If
the timeout triggers, the remote client is kicked
off.
Default: 300
local_max_rate
The maximum data transfer rate permitted, in bytes
per second, for local authenticated users.
Default: 0 (unlimited)
local_umask
The value that the umask for file creation is set
to for local users. NOTE! If you want to specify
octal values, remember the "0" prefix otherwise the
value will be treated as a base 10 integer!
Default: 077
pasv_max_port
The maximum port to allocate for PASV style data
connections. Can be used to specify a narrow port
range to assist firewalling.
Default: 0 (use any port)
pasv_min_port
The minimum port to allocate for PASV style data
connections. Can be used to specify a narrow port
range to assist firewalling.
Default: 0 (use any port)
STRING OPTIONS
Below is a list of string options.
anon_root
This option represents a directory which vsftpd
will try to change into after an anonymous login.
Failure is silently ignored.
Default: (none)
banned_email_file
This option is the name of a file containing a list
of anonymous e-mail passwords which are not permit
ted. This file is consulted if the option
deny_email_enable is enabled.
Default: /etc/vsftpd.banned_emails
chown_username
This is the name of the user who is given ownership
of anonymously uploaded files. This option is only
relevant if another option, chown_uploads, is set.
Default: root
chroot_list_file
The option is the name of a file containing a list
of local users which will be placed in a chroot()
jail in their home directory. This option is only
relevant if the option chroot_list_enable is
enabled, and the option chroot_local_user is dis
abled.
Default: /etc/vsftpd.chroot_list
guest_username
See the boolean setting guest_enable for a descrip
tion of what constitutes a guest login. This set
ting is the real username which guest users are
mapped to.
Default: ftp
ftp_username
This is the name of the user we use for handling
anonymous FTP. The home directory of this user is
the root of the anonymous FTP area.
Default: ftp
ftpd_banner
This string option allows you to override the
greeting banner displayed by vsftpd when a connec
tion first comes in.
Default: (none - default vsftpd banner is dis
played)
local_root
This option represents a directory which vsftpd
will try to change into after a local (i.e. non-
anonymous) login. Failure is silently ignored.
Default: (none)
message_file
This option is the name of the file we look for
when a new directory is entered. The contents are
displayed to the remote user. This option is only
relevant if the option dirmessage_enable is
enabled.
Default: .message
nopriv_user
This is the name of the user that is used by vsftpd
when it want to be totally unprivileged. Note that
this should be a dedicated user, rather than
nobody. The user nobody tends to be used for rather
a lot of important things on most machines.
Default: nobody
pam_service_name
This string is the name of the PAM service vsftpd
will use.
Default: ftp
secure_chroot_dir
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.
Default: /var/run/vsftpd
userlist_file
This option is the name of the file loaded when the
userlist_enable option is active.
Default: /etc/vsftpd.user_list
xferlog_file
This option is the name of the file to which we
write the transfer log. The transfer log is only
written if the option xferlog_enable is set.
Default: /var/log/vsftpd.log
AUTHOR
chris@scary.beasts.org
VSFTPD.CONF(5)
FORUM HardWare.fr
il est tres complet je trouve 
(tromper de serveur...)