Response: 331 Please, specify the password. Status: Waiting for response to: PASS *** Status: Waiting for response to: USER *** Status: FTPS authentication successful, lib =. Response: 234 Using authentication type TLS. Status: Waiting for response to: AUTH TLS
Logs : Logs when connecting without the GnuTLS library (in parallel, so note that logs are duplicated): Connecting to the FileZilla server works as expected when connecting through FileZilla client, and also when connecting through FluentFTP without the GnuTLS library but without any parallellisation.
Filezilla linux check save trusted certificates how to#
We can't figure out however what exactly is wrong, and how to get past this error. When we look at the FileZilla server logs, we see error -344 (GNUTLS_E_NO_APPLICATION_PROTOCOL | No common application protocol could be negotiated.) which seems to be related to APLN. Using Wireshark, we notice that the connection gets killed after the CLIENT HELLO request.Īt the client side, we get following error: : Error : *GnuTlsHandShake(.) failed: (-110) GNUTLS_E_PREMATURE_TERMINATION. On Fedora/Redhat/CentOS systems: sudo yum install filezilla. On Debian/Ubuntu based systems: sudo apt-get install filezilla. Mostly, fileZilla is available on almost all Linux distributions default repositories. Now we get a different error however, where we can't even get past the TLS handshake when connecting. So let us install a graphical FTP client called Filezilla to make things much easier. To trust the server permanently, select the Always trust this host, add this key to the.
The cause of these errors was related to TLS session resumption.į : Code: 425 Message: Unable to build data connection: TLS session of data connection not resumed.Īfter a lot of investigating, we decided to try out the FluentFTP.GnuTls library. FileZilla may display a message that the servers host key is unknown. After updating our FileZilla server to the latest version, we started getting errors when connecting to our server in parallel using FluentFTP (37.0.1).
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