Use vsftpd to build an ftp server.
1. Install vsftpd
sudo apt-get install vsftpd
2. Modify the configuration file
cd sudo vi /etc/vsftpd.conf
listen=YES
#匿名用户登录允许打开
anonymous_enable=YES
local_enable=YES
#打开写权限
write_enable=YES
local_umask=022
#匿名用户上传权限打开
anon_upload_enable=YES
#匿名用户创建目录权限打开
anon_mkdir_write_enable=YES
#添加匿名用户根目录（自己指定）
anon_root=/home/luffy/anonFtp
3. Access the ftp server
(1) Under windows, open my computer and enter in the path bar:
ftp://FTP服务器IP地址
Username: anonymous
Password: (empty)
(2) Enter in the linux command line:
ftp FTP服务器IP地址
例：ftp 192.168.1.1
Others are the same as above, exit input:
bye