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ftpusers：禁止user_list列表中的用户访问FTP
userlist_enable=YES,userlist_deny=YES,禁止user_list列表中的用户访FTP
userlist_enable=YES,userlist_deny=NO,只允许user_list列表中的用户FTP.
userlist_enable=NO,因设定userlist_enable=NO,忽略user_list文件,user_list不启作用
userlist_enable=NO,user_list不启作用
ftpusers禁止的优先级更高.假设ftpusers禁止woodie用户访问,userlist允许woodie用户访问,则在运行时,用户woodie不能访问ftp.
$ vim /etc/vsftpd/vsftpd.conf
# Example config file /etc/vsftpd/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.
#
# 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
#
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
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
#
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
#xferlog_file=/var/log/xferlog
#
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file,YES to xferlog_file
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.
#
# 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 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().
#chroot_list_enable=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
#
# When "listen" directive is enabled,vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=YES
#listen_port=56880
pasv_min_port=30000
pasv_max_port=35000
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets,you must run two copies of vsftpd whith two configuration files.
# Make sure,that one of the listen options is commented !!
#listen_ipv6=YES
pam_service_name=vsftpd.vu
#pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
chroot_local_user=YES
guest_enable=YES
guest_username=virtual
virtual_use_local_privs=YES
#reverse_lookup_enable=NO
user_config_dir=/etc/vsftpd/vsftpd_user_conf
生成vsftpd虚拟用户数据库文件
$ vim /etc/vsftpd/ftpuser.txt
ftpupload
12345678
格式很简单：”一行用户名,一行密码!”.
db_load命令可以将用户文本信息文件转换为db数据库并使用hash加密.
选项-T允许应用程序能够将文本文件转译载入进数据库.由于我们之后是将虚拟用户的信息以文件方式存储在文件里的,为了让Vsftpd这个应用程序能够通过文本来载入用户数据,必须要使用这个选项.
指定了选项-T,那么一定要追加子选项-t ; 子选项-t,追加在在-T选项后,用来指定转译载入的数据库类型.hash就是使用hash码加密. （编辑：辽源站长网）
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