Introduction to virtual User Creation in Linux vsftpd

Article Title: Virtual User Creation in Linux vsftpd. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

1. Create a virtual user database

# Vi/tmp/logins.txt:

Longyufei

1985731

Liushuai

123456

Virtual user information, format:

<User Name>

<Password>

(Note that there cannot be spaces before and after !)

2. log on to the system as a root user and create a user database

# Db_load-T-t hash-f/tmp/logins.txt/etc/vsftpd_login.db

Create a database file/etc/vsftpd_login.db and change its file attributes:

# Chmod 600/etc/vsftpd_login.db

3. Create a PAM file and tell the system that you want to use your own database.

# Vi/etc/pam. d/ftp. vu

Content:

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

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

Tell the system that the new user authorization library is in place.

4. create folders and authorize virtual users

# Useradd-d/ftp-s/sbin/nologin virtual (-d user's home directory. -S: the default shell and virtual username used by the user name)

# Chown-R virtual. virtual/ftp (change/ftp directory user .)

5. Modify the vsftpd. conf file

# Vi/etc/vsftpd. conf, and add it to the end (my configuration only retains the following content ):

Anonymous_enable = NO

Local_enable = YES

Connect_from_port_20 = YES

Listen = YES

Listen_port = 21

Tcp_wrappers = YES

Guest_enable = YES

Guest_username = virtual (all virtual users are equivalent to the permission of the virtual system account)

User_config_dir =/etc/vsftpd/user_config_dir (specify the configuration directory for each virtual user account ,)

Pam_service_name = ftp. vu (to correspond to the PAM file just created)

Local_root =/www (specify the default ftp directory. If not set, the default ftp directory is the default directory of the ftp System Account (see/etc/passwd file content ))

The longyufei user configuration file corresponding to the user_config_dir file:

/Etc/vsftpd/user_config_dir/longyufei

Anon_world_readable_only = NO

Write_enable = YES

Anon_upload_enable = YES

Anon_other_write_enable = YES

Local_root =/www/longyufei

Anon_mkdir_write_enable = YES