发布于 2014-12-12 08:50:51 | 163 次阅读 | 评论: 0 | 来源: PHPERZ
vsftpd FTP软件
vsftpd 是“very secure FTP daemon”的缩写，安全性是它的一个最大的特点。vsftpd 是一个 UNIX 类操作系统上运行的服务器的名字，它可以运行在诸如 Linux、BSD、Solaris、 HP-UNIX等系统上面，是一个完全免费的、开发源代码的ftp服务器软件，支持很多其他的 FTP 服务器所不支持的特征。比如：非常高的安全性需求、带宽限制、良好的可伸缩性、可创建虚拟用户、支持IPv6、速率高等。
本文为大家讲解的是如何在ubuntu 下安装vsftpd FTP服务器，感兴趣的同学参考下．
vsftpd 是“very secure FTP daemon”的缩写，安全性是它的一个最大的特点。vsftpd 是一个 UNIX 类操作系统上运行的服务器的名字，它可以运行在诸如 Linux、BSD、Solaris、 HP-UNIX等系统上面，是一个完全免费的、开发源代码的ftp服务器软件，支持很多其他的 FTP 服务器所不支持的特征。比如：非常高的安全性需求、带宽限制、良好的可伸缩性、可创建虚拟用户、支持IPv6、速率高等。
vsftpd在ubuntu下安装非常简单，执行如下命令即可
sudo apt-get install vsftpd
Vsftpd相关的配置文件有3个:
1、/etc/vsftpd/vsftpd.conf
2、/etc/vsftpd/ftpusers
3、/etc/vsftpd/user_list
/etc/vsftpd/vsftpd.conf是Vsftpd的服务器配置文件,其内容如下:
[root@localhost /]# vi /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=YES //是否允许anonymous登陆FTP服务器.
#
# Uncomment this to allow local users to log in.
local_enable=YES //是否允许本地用户登陆FTP服务器.
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES /是否允许用户具有在FTP服务器文件中执行写权限.
#
# 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 //设置本地用户的文件生成掩码为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 //是否允许匿名账户在FTP服务器中上传文件.
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES //是否允许匿名账户在FTP服务器中创建目录.
#
#anon_max_rate=20000 //设置匿名用户的最大传输速率为20Kbps
#local_max_rate=1000000 //设置nimi本地用户最大传输速率为1Mbps
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES //激活目录信息.
#
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
xferlog_enable=YES //启用上传和下载日志功能.
#
# 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 //将匿名用户上传的文件所有权更改为下方命令
#chown_username=whoever //指定的用户.
#
# 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 //设置日志文件的文件名和存储路径.
#
# 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 //是否使用标准的ftpd xferlog日志格式.
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600 //设置空闲的用户会话中断时间.
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120 //设置数据连接超时时间.
#
#max_clients=100 //设置同时连接FTP服务器的并发用户为100
#max_per_ip=2 //设置每用户同一时段并发下载线程数为2
#
# 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 //是否允许使用ASCII方式上传文件.
#ascii_download_enable=YES //是否允许使用ASCII方式下载文件.#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service. //设置FTP服务器的欢迎登陆信息.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES //是否开启禁止匿名登陆的邮件地址
# (default follows)
#banned_email_file=/etc/vsftpd/banned_emails //禁止匿名登陆邮件地址的列表
#
# 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 //是否允许用户切换主目录
#chroot_local_user=YES //是否允许本地用户切换主目录
# (default follows)
#chroot_list_file=/etc/vsftpd/chroot_list //允许切换主目录的用户列表#
# 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 //是否允许客户端使用ls -R选项递归查询子目录
#
# 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 //是否将vsftpd设置为独立启动模式
#
# 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=YESpam_service_name=vsftpd //设置PAM认证服务的配置文件名称,该文件在/etc/pam.d下
userlist_enable=YES //是否启用用户列表登陆限制
#userlist_deny=YES //是否禁止用户列表中的用户登陆
tcp_wrappers=YES //使用tcp_wrappers作为主机访问控制方式
可能出现的错误：
安装后，登陆出现530 Login incorrect
将pam_service_name=vsftpd 修改为 pam_service_name=ftp
出现
500 OOPS: vsftpd: refusing to run with writable root inside chroot()
500 OOPS: priv_sock_get_cmd
增加：allow_writeable_chroot=YES