A Synology NAS can be used as a FTP server out-of-the-box (after enabling it), but there is no FTP client installed that can be used from a interactive shell. You can install a FTP client, lftp by Alexander Lukyanov, using ipkg.

If you haven’t installed ipkg yet, please install it first (link).

Install package lftp

You can install the package lftp in with the command: ipkg install lftp



Disable certificate verification

By default lftp will check the ssl certificate of the destination. If no trusted certificate is found the command is not executed.

$ lftp [email protected]:/directory
cd: Fatal error: Certificate verification: Not trusted

You can disable the certificate verification in lftp by setting an option in the ~/.lftp/rc file. This file does not exist by default, nor does the .lftp directory.

  1. Create the .lftp directory with the command : mkdir /root/.lftp
  2. Create and edit the rc file with the command : vi /root/.lftp/rc
  3. Press ‘i’ for edit mode
  4. Add the line : set ssl:verify-certificate no
  5. Exit edit mode by pressing Escape (twice)
  6. Close and save the file by pressing Z (capital z) twice)

6 Reacties

  1. Hi,

    Thanks for the information, installation went fine.
    Unfortunately, it seems lftp randomly restart the transfer from scratch.
    I used it to xfer 6 big files to my media server, at the end it left 4 temporary files in the destination folder.
    Overall, samba is more reliable, at least in my case

    1. Hi Luc,

      Thank you for sharing your experience. It’s good to share real life experience with lftp.
      Personally I haven’t had any problems with lftp but tested only with small files.


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