yum -y install vsftpd
vim /etc/vsftpd/vsftpd.conf
yum -y install ftp
ftp localhost
cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.bak
systemctl start vsftpd.service
systemctl status vsftpd.service
systemctl enable vsftpd.service
ftp 127.0.0.1
chmod 777 -R /var/ftp/pub

cat /usr/share/doc/vsftpd-3.0.2/EXAMPLE/VIRTUAL_USERS/README.configuration

This example shows how to set up vsftpd / PAM with “virtual users”.

A virtual user is a user login which does not exist as a real login on the

system. Virtual users can therefore be more secure than real users, beacuse

a compromised account can only use the FTP server.



Virtual users are often used to serve content that should be accessible to

untrusted users, but not generally accessible to the public.



Step 1) Create the virtual users database.

We are going to use pam_userdb to authenticate the virtual users. This needs

a username / password file in “db” format - a common database format.

To create a “db” format file, first create a plain text files with the

usernames and password on alternating lines.

See example file “logins.txt” - this specifies “tom” with password “foo” and

“fred” with password “bar”.

Whilst logged in as root, create the actual database file like this:



db_load -T -t hash -f logins.txt /etc/vsftpd_login.db

(Requires the Berkeley db program installed).

NOTE: Many systems have multiple versions of “db” installed, so you may

need to use e.g. db3_load for correct operation. This is known to affect

some Debian systems. The core issue is that pam_userdb expects its login

database to be a specific db version (often db3, whereas db4 may be installed

on your system).



This will create /etc/vsftpd_login.db. Obviously, you may want to make sure

the permissions are restricted:



chmod 600 /etc/vsftpd_login.db



For more information on maintaing your login database, look around for

documentation on “Berkeley DB”, e.g.

http://www.sleepycat.com/docs/utility/index.html





Step 2) Create a PAM file which uses your new database.



See the example file vsftpd.pam. It contains two lines:



auth required /lib/security/pam_userdb.so db=/etc/vsftpd_login

account required /lib/security/pam_userdb.so db=/etc/vsftpd_login



This tells PAM to authenticate users using our new database. Copy this PAM

file to the PAM directory - typically /etc/pam.d/



cp vsftpd.pam /etc/pam.d/ftp



(Note - if you set pam_service_name to e.g. vsftpd instead, you’ll need to copy

to /etc/pam.d/vsftpd).





Step 3) Set up the location of the files for the virtual users.



useradd -d /home/ftpsite virtual

ls -ld /home/ftpsite

(which should give):

drwx———    3 virtual  virtual      4096 Jul 30 00:39 /home/ftpsite



We have created a user called “virtual” with a home directory “/home/ftpsite”.

Let’s add some content to this download area:



cp /etc/hosts /home/ftpsite

chown virtual.virtual /home/ftpsite/hosts





Step 4) Create your vsftpd.conf config file.



See the example in this directory. Let’s go through it line by line:



anonymous_enable=NO

local_enable=YES



This disables anonymous FTP for security, and enables non-anonymous FTP (which

is what virtual users use).



write_enable=NO

anon_upload_enable=NO

anon_mkdir_write_enable=NO

anon_other_write_enable=NO



These ensure that for security purposes, no write commands are allowed.



chroot_local_user=YES



This makes sure that the virtual user is restricted to the virtual FTP area

/home/ftpsite we set up above.



guest_enable=YES

guest_username=virtual



The guest_enable is very important - it activates virtual users! And

guest_username says that all virtual users are mapped to the real user

“virtual” that we set up above. This will also determine where on the

filesystem the virtual users end up - the home directory of the user

“virtual”, /home/ftpsite.



listen=YES

listen_port=10021



This puts vsftpd in “standalone” mode - i.e. not running from an inetd. This

means you just run the vsftpd executable and it will start up. This also

makes vsftpd listen for FTP requests on the non-standard port of 10021 (FTP

is usually 21).



pasv_min_port=30000

pasv_max_port=30999



These put a port range on passive FTP incoming requests - very useful if

you are configuring a firewall.



Copy the example vsftpd.conf file to /etc:



cp vsftpd.conf /etc/





Step 5) Start up vsftpd.



Go to the directory with the vsftpd binary in it, and:



./vsftpd



If all is well, the command will sit there. If all is not well, you will

likely see some error message.





Step 6) Test.



Launch another shell session (or background vsftpd with CTRL-Z and then “bg”).

Here is an example of an FTP session:



ftp localhost 10021

Connected to localhost (127.0.0.1).

220 ready, dude (vsFTPd 1.1.0: beat me, break me)

Name (localhost:chris): tom

331 Please specify the password.

Password:

230 Login successful. Have fun.

Remote system type is UNIX.

Using binary mode to transfer files.

ftp> pwd

257 “/“

ftp> ls

227 Entering Passive Mode (127,0,0,1,117,135)

150 Here comes the directory listing.

226 Transfer done (but failed to open directory).

ftp> size hosts

213 147

ftp>



Comments:

The password we gave was “foo”.

Do not be alarmed by the “failed to open directory”. That is because the

directory /home/ftpsite is not world readable (we could change this

behaviour if we wanted using anon_world_readable_only=NO but maybe we want

it this way for security.

We can see that we have access to the “hosts” file we copied into the virtual

FTP area, via the size command.

参考：https://blog.csdn.net/bluishglc/article/details/42399439
allow_writeable_chroot=YES

# 学习下网址：https://blog.csdn.net/bruce_6/article/details/78064217
# 学习下文件：cat /usr/share/doc/vsftpd-3.0.2/EXAMPLE/VIRTUAL_USERS_2/README 
# vim /etc/vsftpd/vsftpd.conf,配置如下内容：
## Add by bianxh:20190616

guest_enable=YES

guest_username=bianxh

pasv_enable=YES

pasv_promiscuous=YES

pasv_min_port=30000

pasv_max_port=30005

allow_writeable_chroot=YES

# 用户登录路径，local_root 针对系统用户

local_root=/home/ftpsite/

user_config_dir=/etc/vsftpd/vsftpd_user_conf
vim /etc/vsftpd/vsftpd_user_conf/bianxh2
# 内容如下：
local_root=/home/ftpsite/bianxh2
anon_world_readable_only=NO

smb挂载小米路由：
cd /home/ftpsite/bianxh
mount //192.168.1.1/xiaomi xiaomi/ -t cifs
cd /home/ftpsite/yyxz
mount //192.168.1.1/XiaoMi/share /home/ftpsite/yyxz/MiShare -t cifs

ftp测试账号：
bianxh2 bianxh2

权限说明：vim /etc/vsftpd/vsftpd_user_conf/bianxh

local_root=/home/ftpsite/

# 删除/重命名的权限

anon_other_write_enable=YES

# 使download用户的能下载,也只能下载；写成YES，将不能列出文件和目录

anon_world_readable_only=NO

# 写权限

write_enable=YES

# 上传权限

anon_upload_enable=YES

# 新建目录权限

anon_mkdir_write_enable=YES

[root@MiWiFi-R2D-srv vsftpd]# cat /etc/vsftpd/logins.txt 
bianxh2
bianxh2Passwd
[root@MiWiFi-R2D-srv vsftpd]# db_load -T -t hash -f logins.txt /etc/vsftpd/vsftpd_login.db

#登录西安152服务器
sftp -P 22020 [email protected]:/home/yyxz/yyxz
## 下载文件到本地
get yyxz-1.0-SNAPSHOT.jar /home/yyxz/yyxz/yyxz-1.0-SNAPSHOT-.jar
Fetching /home/yyxz/yyxz/yyxz-1.0-SNAPSHOT.jar to /home/yyxz/yyxz/yyxz-1.0-SNAPSHOT-.jar
/home/yyxz/yyxz/yyxz-1.0-SNAPSHOT.jar                                           100%   71MB 640.0KB/s   01:54    
sftp> exit