SFTP Smart Services

We are testing a new connection with a customer FTPS with the plugin SFTP Functions Plugin V 3.0.3. 

For this purpose, we have tested first the connection in WinSCP, with successful result, and without any private connection or restriction in this way. We are outside the customer network. Then, we are using the smart service '(FTP) Get Remote Folder Contents', using Third-party Credentials in the admin console with the same credentials we have used previously in WinSCP, but we obtain the following error:

ERROR com.appiancorp.ps.plugins.filetransfer.ftps.GetRemoteFolderContentsOverFTPS - org.apache.commons.net.ftp.FTPConnectionClosedException: Connection closed without indication.

These are the details provided about ftp:

* The control port (the port that we are using from Appian to call FTP) is 21021

* The transfer data ports are between 30,000 and 31,000

We have tested the 'Get Remote Folder Contents' smart service with FTP, FTPS and SFTP (even though we know it should be FTPS).

We have tested these 3 options without any certificate, and also with the Trusted Server Certificate uploaded in the Admin Console.

We have tested the connection with Appian Support team, and they were able to successfully telnet, so it´s not a communication problem.

With this information. Could you see if there could be a problem from the plugin side. May be the ports that FTP is using, we don't know what else to test to find out the cause of the error, so your help could be really useful.

We are testing a new connection with a customer FTPS with the plugin SFTP Functions Plugin V 3.0.3. 

For this purpose, we have tested first the connection in WinSCP, with successful result, and without any private connection or restriction in this way. We are outside the customer network. Then, we are using the smart service '(FTP) Get Remote Folder Contents', using Third-party Credentials in the admin console with the same credentials we have used previously in WinSCP, but we obtain the following error:

ERROR com.appiancorp.ps.plugins.filetransfer.ftps.GetRemoteFolderContentsOverFTPS - org.apache.commons.net.ftp.FTPConnectionClosedException: Connection closed without indication.

These are the details provided about ftp:

* The control port (the port that we are using from Appian to call FTP) is 21021

* The transfer data ports are between 30,000 and 31,000

We have tested the 'Get Remote Folder Contents' smart service with FTP, FTPS and SFTP (even though we know it should be FTPS).

We have tested these 3 options without any certificate, and also with the Trusted Server Certificate uploaded in the Admin Console.

We have tested the connection with Appian Support team, and they were able to successfully telnet, so it´s not a communication problem.

With this information. Could you see if there could be a problem from the plugin side. May be the ports that FTP is using, we don't know what else to test to find out the cause of the error, so your help could be really useful.

Hi!

We have discovered the cause of the issue. Compared to winSCP, it is as if the plugin work with this check disabled.

Is it correct? Can we connect to FTP through the plugin with 'Reuse TLS/SSL session ID for data connections enable'? In WinSCP is enable by default.

Sorry, the correct transfer data ports are between 30,000 and 30,100