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Connection to Synology NAS in FTP-SSL (ftps) prompts for local certificate #10671

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cyberduck opened this issue Apr 6, 2019 · 5 comments
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Connection to Synology NAS in FTP-SSL (ftps) prompts for local certificate #10671

cyberduck opened this issue Apr 6, 2019 · 5 comments
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bug duplicate ftp-tls FTP (TLS) Protocol Implementation high priority

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@cyberduck
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c318f6e created the issue

Connecting to a Synology DS FTP server through FTP-SSL (ftps) causes Cyberduck to prompt for a local certificate. Clicking "disconnect" works, but it has to be clicked for each and every new connection (each file transfer).
@cyberduck
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@dkocher commented

Please check the server configuration not to request a certificate in the TLS handshake.

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c318f6e commented

I also contacted Synology support.
The strange thing is that FileZilla displays the distant (server) certificate in order for the client to accept it, which is expected.
Cyberduck only displays a list of local (= already inside the user's Keychain) certificates, and not the server's one.

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c318f6e commented

Actually I just tried on Windows, and Cyberduck does display the distant (server) certificate with the ability to install it locally, and once it is done it doesn't prompt ever.
So it seems like a macOS Cyberduck version bug that displays the local keychain certificate list, instead of the server's certificate and the ability to install it locally.

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@dkocher commented

Duplicate for #10468.

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@dkocher commented

Do you know what FTP server is used on Synology?

@iterate-ch iterate-ch locked as resolved and limited conversation to collaborators Nov 26, 2021
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