vsftp安装 创建用户 并限定用户在自己的目录
1、查看是否已经安装了vsftpd
vsftpd -version
2、安装vsftpd（CentOS7）
yum install -y vsftpd
3、新建FTP目录
创建的FTP目录如下：
/data/KodServer/data/User/tomas/home
4、创建新用户
ftpname为你为该ftp创建的用户名，/data/KodServer/data/User/tomas/home 为登录进去后的位置
useradd -d /data/KodServer/data/User/tomas/home -s /bin/bash ftpname
5、为新建的用户设置密码
passwd ftpname
【备注：用cat etc/passwd可以查看当前系统用户】
6、设置主目录（更改登录时看到的目录，看个人需要更改，如果第4步已设置好，此步可忽略）
usermod -d /data/KodServer/data/User/tomas/home ftpname
7、添加用户组（这步可忽略）
groupadd ftpgroup
8、防火墙添加FTP服务
firewall-cmd --permanent --zone=public --add-service=ftp
firewall-cmd --reload
解决办法：
①、查看ftp的Selinux状态：sestatus -b | grep ftp
②、在结果中可以看到： ftp_home_dir off
③、将状态改为on：setsebool -P ftp_home_dir on
④、重启vsftp服务：systemctl restart vsftpd.service
setsebool -P ftpd_full_access on
systemctl restart firewalld.service
9、配置只能访问自身目录（/data/KodServer/data/User/tomas/home），不能访问其他路径
修改/etc/vsftpd.conf
cd /etc/vsftpd/
vi vsftpd.conf
#去掉前面的注释
chroot_local_user=YES
ascii_upload_enable=YES
ascii_download_enable=YES
#文件末尾添加
allow_writeable_chroot=YES
保存，重启vsftpd
设置开机启动：
systemctl enable vsftpd.service
启动vsftpd服务
systemctl start vsftpd.service
禁止ftp用户通过22端口登录ftp服务器：
由于需要限制ftp用户在自己的目录，在21端口下没有问题，但当ftp用户用sftp登录时，还是可以访问上级目录，于是禁止ftp用户ssh登录，切断22端口的通信。
首先，执行如下命令，找到nologin的shell：
vi /etc/shells
可以看到禁止登录的shell文件为/usr/sbin/nologin，然后执行如下命令：
usermod -s /usr/sbin/nologin tomas
如果要恢复tomas的ssh登录，执行如下命令：
usermod -s /bin/bash tomas
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原文链接：https://blog.csdn.net/wangkai_123456/java/article/details/78612656
配置文件：
# 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).
# g_enable
#
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. The vsftpd.conf(5) man page explains
# the behaviour when these options are disabled.
# 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=YES
#
# 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 !!
#local_root=/data
pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
allow_writeable_chroot=YES