Opened 11 years ago

#8478 new Feature request

ftp/s does not support certificate-auth (no password)

Reported by: Bobby Owned by:
Priority: normal Component: FileZilla Client
Keywords: ftp/s certificate auth no password Cc:
Component version: Operating system type: Windows
Operating system version: all Win 7 x64


FileZilla does not appear to support client-certificate auth (no password) mode. Examples where this does work via cURL include:

curl -v -k --ftp-ssl --ftp-pasv --disable-epsv --key userkey.pem --cert usercert.pem ftp://user@server

curl -v -k --tlsv1 --ssl --ssl-reqd --ftp-alternative-to-user "SITE AUTH" --disable-epsv --ftp-skip-pasv-ip --key userkey.pem --cert usercert.pem ftp://server

I can provide output and trace logs if desired, but since the traces show certificate detail, I'd prefer not to do it in public.

RFC 2228 specifically states that the server can accept AUTH info as sufficient for login, and provides FTP response codes for doing so, bypassing the PASSWORD prompt.

The ability to specify a certificate for a particular connection profile would help here, keeping the connection from trying the wrong certificate (this would also help SFTP connections avoide the error noted in bug report 8476 (

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