FTP 服務安裝

FTP service setup

1. Setup vsftpd
   sudo apt-get install vsftpd -y

2. Start vsftpd

   • check whether the port 21 is working
     sudo netstat -nltp | grep 21
   • if the above not start, you can do it manually
     sudo systemctl start vsftpd.service

3. Config the User directory

   • make a directory sudo mkdir /home/uftp
   • make a welcome file sudo touch /home/uftp/welcome.txt
   • config user and create passwd
   • sudo useradd -d /home/uftp -s /bin/bash uftp
   • sudo passwd uftp
   • remove the file to avoid login failed. sudo rm /etc/pam.d/vsftpd

4. Do some limitation

   • make the user only access the ftp instead of login the server sudo usermod -s /sbin/nologin uftp

   • config again sudo chmod a+w /etc/vsftpd.conf

     
     
     # 限制用戶對主目錄以外目錄訪問
     
     chroot_local_user=YES
     
     
     # 指定一個 userlist 存放允許訪問 ftp 的用戶列表
     
     userlist_deny=NO
     userlist_enable=YES
     
     
     # 記錄允許訪問 ftp 用戶列表
     
     userlist_file=/etc/vsftpd.user_list
     
     
     # 不配置可能導致莫名的530問題
     
     seccomp_sandbox=NO
     
     
     # 允許文件上傳
     
     write_enable=YES
     
     
     # 使用utf8編碼
     
     utf8_filesystem=YES
     

     • create the access file for user list
       sudo touch /etc/vsftpd.user_list
sudo chmod a+w /etc/vsftpd.user_list
       modify the user_list as followed:
       uftp

   • config the access authority

   • the main dir only read sudo chmod a-w /home/uftp
   • the pulic dir can be read and wrote sudo mkdir /home/uftp/public && sudo chmod 777 -R /home/uftp/public
   • restart the service sudo systemctl restart vsftpd.service

5. Prepare the domain and just make the analyze ip then everything will be ok.