[Cyberduck-trac] [Cyberduck] #10468: FTPS explicit TLS no longer works without client certificate

Cyberduck trac at cyberduck.io
Thu Sep 20 14:48:02 UTC 2018

#10468: FTPS explicit TLS no longer works without client certificate
    Reporter:  codeskipper  |      Owner:
        Type:  defect       |     Status:  new
    Priority:  normal       |  Milestone:
   Component:  ftp-tls      |    Version:  6.7.0
    Severity:  major        |   Keywords:  TLS, FTPS
Architecture:  Intel        |   Platform:  macOS 10.13
 A few years ago I set up an FTP server for a client, and tested with
 multiple FTP client software it works as expected with explicit TLS and
 passive transfers.  Cyberduck has alway been my favourite file transfer
 client and it worked just fine.

 Server side is setup with vsftpd and with default settings for
 ssl_request_cert=YES and require_cert=NO.  The latter means (according to
 man page):
     If set to yes, all SSL client connections are required to present a
 client certificate.

 Cyberduck now asks me to point to a local certificate in my login keychain
 and wants to export it.  Without completing this I'm no longer able to
 connect to the FTP server with Cyberduck.  When I test this for my client
 with alternative tools like FileZilla and WinSCP I can still connect fine
 without configuring a client TLS cert.

 This appears to be a bug, i think the use of a client cert should not be
 mandatory on the client unless the server requires it.


Ticket URL: <https://trac.cyberduck.io/ticket/10468>
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