使特定網段用戶能自由上傳下載的方法總結_Ftp服務器教程
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在FC3上用vsftp實FTP服務。由于一些網段的用戶為內部成員，不會對服務器造成危害。為了減少麻煩，更好地實現資源共享，現在想給他們的網段（本例中以10.0.1.*為例）的用戶以自由上傳下載的權利。
涉及的配置文件一共有四個：
vsftpd.conf
hosts.allow
/etc/vsftpd/local.class
/etc/vsftpd/other.class
內容：
hosts.allow
[code:1:14158339dc]#
# hosts.allow This file describes the names of the hosts which are
# allowed to use the local INET services, as decided
# by the '/usr/sbin/tcpd' server.
vsftpd: 10.0.1.* : setenv VSFTPD_LOAD_CONF /etc/vsftpd/local.class
vsftpd: ALL : setenv VSFTPD_LOAD_CONF /etc/vsftpd/other.class[/code:1:14158339dc]
/etc/vsftpd/local.class
[code:1:14158339dc]write_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES[/code:1:14158339dc]
/etc/vsftpd/other.class
[code:1:14158339dc]write_enable=NO
anon_upload_enable=NO
anon_mkdir_write_enable=NO[/code:1:14158339dc]
vsftpd.conf
[code:1:14158339dc]# 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=YES
#
# Uncomment this to allow local users to log in.
# 不允許本地用戶上傳下載,即只允許基于ip的認證
#local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
# 在ftpd中的local.class和other.class文件中有write_enable=YES項
#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
#
# 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
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 turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#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
Anon_umask=022
pam_service_name=vsftpd
userlist_enable=YES
#下面一行是我加的
userlist_deny=YES
#enable for standalone mode
listen=YES
tcp_wrappers=YES[/code:1:14158339dc]
說明一下：
首先設置vsftpd.conf中tcp_wrappers=YES（一般的默認設置都是YES）。
當有用戶訪問時，則會自動查看hosts.allow的配置，而在根據hosts.allow中的語句，
系統(tǒng)會根據客戶的IP跳轉到不同的文件去，按照那里的設置工作。
在/etc/vsftpd/local.class中設置10.0.1.*網段的用戶可以自由上傳下載。
在/etc/vsftpd/other.class中設置其他用戶只有下載的權限。
就是這么簡單。不過有一點必須說明：那就是目錄和文件的權限問題。
首先，設置你想讓匿名用戶上傳的目錄的可寫權限
再一個在
vsftpd.conf中要加上
anon_umask=022
這一行是給匿名用戶上傳的文件添加可讀的權限。你可以測試一下，匿名用戶上傳的文件的權限是600，即上傳上去了卻沒有可讀權限,下載不了！
涉及的配置文件一共有四個：
vsftpd.conf
hosts.allow
/etc/vsftpd/local.class
/etc/vsftpd/other.class
內容：
hosts.allow
[code:1:14158339dc]#
# hosts.allow This file describes the names of the hosts which are
# allowed to use the local INET services, as decided
# by the '/usr/sbin/tcpd' server.
vsftpd: 10.0.1.* : setenv VSFTPD_LOAD_CONF /etc/vsftpd/local.class
vsftpd: ALL : setenv VSFTPD_LOAD_CONF /etc/vsftpd/other.class[/code:1:14158339dc]
/etc/vsftpd/local.class
[code:1:14158339dc]write_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES[/code:1:14158339dc]
/etc/vsftpd/other.class
[code:1:14158339dc]write_enable=NO
anon_upload_enable=NO
anon_mkdir_write_enable=NO[/code:1:14158339dc]
vsftpd.conf
[code:1:14158339dc]# 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=YES
#
# Uncomment this to allow local users to log in.
# 不允許本地用戶上傳下載,即只允許基于ip的認證
#local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
# 在ftpd中的local.class和other.class文件中有write_enable=YES項
#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
#
# 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
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 turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#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
Anon_umask=022
pam_service_name=vsftpd
userlist_enable=YES
#下面一行是我加的
userlist_deny=YES
#enable for standalone mode
listen=YES
tcp_wrappers=YES[/code:1:14158339dc]
說明一下：
首先設置vsftpd.conf中tcp_wrappers=YES（一般的默認設置都是YES）。
當有用戶訪問時，則會自動查看hosts.allow的配置，而在根據hosts.allow中的語句，
系統(tǒng)會根據客戶的IP跳轉到不同的文件去，按照那里的設置工作。
在/etc/vsftpd/local.class中設置10.0.1.*網段的用戶可以自由上傳下載。
在/etc/vsftpd/other.class中設置其他用戶只有下載的權限。
就是這么簡單。不過有一點必須說明：那就是目錄和文件的權限問題。
首先，設置你想讓匿名用戶上傳的目錄的可寫權限
再一個在
vsftpd.conf中要加上
anon_umask=022
這一行是給匿名用戶上傳的文件添加可讀的權限。你可以測試一下，匿名用戶上傳的文件的權限是600，即上傳上去了卻沒有可讀權限,下載不了！
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Ftp服務器教程-使特定網段用戶能自由上傳下載的方法總結
。