vsftp安装和配置
参考链接
链接内容：
1、检查安装vsftpd软件
使用如下命令#
rpm -qa |grep vsftpd
可以检测出是否安装了vsftpd软件，如果没有安装，使用YUM命令进行安装
yum install vsftpd -y
2、启动服务
使用vsftpd软件，主要包括如下几个命令：
启动ftp命令
#service vsftpd start
停止ftp命令
#service vsftpd stop
重启ftp命
#service vsftpd restart
3、vsftpd的配置
ftp的配置文件主要有三个，位于/etc/vsftpd/目录下，分别是：
- ftpusers 该文件用来指定那些用户不能访问ftp服务器。
- user_list 该文件用来指示的默认账户在默认情况下也不能访问ftp
- vsftpd.conf vsftpd的主配置文件
4、以匿名用户登录
我们去掉配置文件vsftpd.conf 里面以下
anon_upload_enable=YES
anon_mkdir_write_enable=YES
两项前面的#号，就可以完成匿名用户的配置，此时匿名用户既可以登录上传、下载文件。记得修改配置文件后需要重启服务。
5、非匿名账户的创建与使用
vsftpd服务与系统用户是相互关联的，例如我们创建一个名为testwww
#useradd testwww
#passwd testwww
6、登录方式（非vsftp机器）
- 浏览器打开 ：
浏览器上输入
ftp://vsftp所在机器ip/
- 文件打开 ：
文件夹输入
ftp://vsftp所在机器ip/ ；
右键可以选择登录
这里写图片描述
问题
配置之后发现使用ftp客户端可以连接服务器，但是无法上传和下载。
配置：
# 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.
# When SELinux is enforcing check for SE bool ftp_home_dir
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.
# When SELinux is enforcing check for SE bool allow_ftpd_anon_write, allow_ftpd_full_access
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/xferlog
#
# 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.
#
# 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().
# (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=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=NO
#
# This directive enables listening on IPv6 sockets. By default, listening
# on the IPv6 "any" address (::) will accept connections from both IPv6
# and IPv4 clients. It is not necessary to listen on *both* IPv4 and IPv6
# sockets. If you want that (perhaps because you want to listen on specific
# addresses) then you must run two copies of vsftpd with two configuration
# files.
# Make sure, that one of the listen options is commented !!
listen_ipv6=YES
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
配置了ftp用户，且目录下的文件权限为777；
解决方法：
[root@tt~]# rpm -qa|grep vsftpd
vsftpd-3.0.2-10.el7.x86_64
[root@tt~]# cat /etc/vsftpd/vsftpd.conf | grep write_enable
write_enable=YES
anon_mkdir_write_enable=YES
[root@tt~]# sestatus -b | grep ftp
ftp_home_dir off
[root@tt~]# setsebool -P ftp_home_dir on
[root@tt~]# sestatus -b | grep ftp
ftp_home_dir on
[root@tt~]# service vsftpd restart
然后就可以了。
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