Centos 7装vsftpd配置虚拟用户

centos7.5 x86_64

yum install -y vsftpd

创建Vsftpd虚拟宿主用户：
useradd vsftpd -s /sbin/nologin

修改配置文件
cd /etc/vsftpd/ && cp vsftpd.conf{,.bak}

vi /etc/vsftpd/vsftpd.conf
# Example config file /etc/vsftpd/vsftpd.conf
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
不容许匿名访问
#
# Uncomment this to allow local users to log in.
# When SELinux is enforcing check for SE bool ftp_home_dir
local_enable=YES
设置本地用户能访问
#
# 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
开启上传下载日志
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
20端口进行数据传输
#
# 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
上传下载日志记录文件
#
# 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=ftp
用系统自带的ftp用户做为vsftpd服务宿主用户，服务相关的文件权限应修改成本用户
#
# 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
开启异步传输
#
# 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
支持ASCII模式的上传和下载功能
#
# 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
开启侦听
#
# 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
关闭IPv6
pam_service_name=vsftpd  #启用pam认证
userlist_enable=YES  #userlist_file的用户不能登陆FTP
tcp_wrappers=YES

开启虚拟用户
guest_enable=YES
指定虚拟用户宿主
guest_username=vsftpd
虚拟用户有宿主用户同样的权限
virtual_use_local_privs=YES
虚拟用户我的配置文件的存放路径，可个性定制权限
user_config_dir=/etc/vsftpd/vconf

创建vsftpd的上传下载日志文件
touch /var/log/xferlog
chown ftp.ftp /var/log/xferlog
创建虚拟用户配置文件目录
mkdir /etc/vsftpd/vconf/
建虚拟用户文件,格式：“一行用户名，一行口令”
touch /etc/vsftpd/vusers
vi /etc/vsftpd/vusers
user01
12345678
user02
12345678
生成虚拟用户数据文件
db_load -T -t hash -f /etc/vsftpd/vusers /etc/vsftpd/vusers.db

新增虚拟用户时，仍需再次执行该命令才生效

设定PAM验证文件，并指定虚拟用户数据库文件进行读取
cp /etc/pam.d/vsftpd /etc/pam.d/vsftpd.bk
vi /etc/pam.d/vsftpd
注释掉原文后添加如下下内容（不注释掉全部原文，虚拟用户会登陆不上）
auth required /lib64/security/pam_userdb.so db=/etc/vsftpd/vusers
account required /lib64/security/pam_userdb.so db=/etc/vsftpd/vusers

定制虚拟用户模板配置文件
vi /etc/vsftpd/vconf/vconf.tmp
local_root=/var/ftp/vuser  #不指定用户名虚拟用户登陆后根目录是/home/vsftpd
#指定虚拟用户的具体主路径。
anonymous_enable=NO
#设定不容许匿名用户访问。
write_enable=YES
#设定容许写操做。
local_umask=022
#设定上传文件权限掩码。
anon_upload_enable=NO
#设定不容许匿名用户上传。
anon_mkdir_write_enable=NO
#设定不容许匿名用户创建目录。
idle_session_timeout=600
#设定空闲链接超时时间。
data_connection_timeout=120
#设定单次连续传输最大时间。
max_clients=10
#设定并发客户端访问个数。
max_per_ip=5
#设定单个客户端的最大线程数，这个配置主要来照顾Flashget、迅雷等多线程下载软件。
download_enable=YES
#可下载，不许改成NO
local_max_rate=50000
#设定该用户的最大传输速率，单位b/s。

cp vconf.tmp user01
用户拥有上传，下载，新建，删除权限
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
用户只拥有上传，下载，新建权限，不容许删除操做
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=NO

创建用户登陆后的目录
cd /var/ftp/
mkdir user{01..02}
chown -R vsftpd.vsftpd /var/ftp/

启动vsftpd服务 systemctl start vsftpd systemctl status vsftpd