anonymous_enable directive must be set to YES.
anon_mkdir_write_enable — When enabled in conjunction with the write_enable directive, anonymous users are allowed to create new directories within a parent directory which has write permissions.
NO.
anon_root — Specifies the directory vsftpd changes to after an anonymous user logs in.
anon_upload_enable — When enabled in conjunction with the write_enable directive, anonymous users are allowed to upload files within a parent directory which has write permissions.
NO.
anon_world_readable_only — When enabled, anonymous users are only allowed to download world-readable files.
YES.
ftp_username — Specifies the local user account (listed in /etc/passwd) used for the anonymous FTP user. The home directory specified in /etc/passwd for the user is the root directory of the anonymous FTP user.
ftp.
no_anon_password — When enabled, the anonymous user is not asked for a password.
NO.
secure_email_list_enable — When enabled, only a specified list of email passwords for anonymous logins are accepted. This is a convenient way to offer limited security to public content without the need for virtual users.
/etc/vsftpd.email_passwords. The file format is one password per line, with no trailing white spaces.
NO.