FTPs protocol

The Explicit FTP over TLS mode is supported by ION. In this variant, the connection is made using SSL/ TLS extension over the plain FTP. Normally the default port 21 is used.

The Implicit FTP over TLS mode or the negotiate mode is not supported. This mode switches to plain FTP in case FTPS connection fails.

When transfer protocol FTPS is selected, additional properties are displayed.

To use this protocol:

  1. Ask your FTP administrator for the correct server certificate of the file server.
  2. Verify the certificate.
  3. When you agree on the authenticity of the certificate, click Import and Trust Certificate.
  4. A window is displayed. Browse to the location of your certificate and select it.
  5. Click Open.
  6. The certificate is imported in the ION trust store

    This table shows the FTPS specific properties:

    Property Description
    Import and Trust Certificate Import server public certificate
    Enable Passive Mode Clear to Disable Passive Mode and enable Active Mode.
    • Passive mode: Port number is received from server.
    • Active mode: Random port number is selected by ION from data port range.
    Override Default Data Port Range for Active Mode When Active mode is selected, a random port in the range of 1024 – 65535 is automatically chosen.

    Select this check box to override the default data port range. You can choose your own port range for ION to use.
    Minimum Port Specify the minimum port number for active mode data port range. The default value is 1024.
    Maximum Port Specify maximum port number for active mode data port range. The default value is 65535.
    Use Client Certificate to Authenticate Select this check box to enable 2-way SSL authentication. The FTPS server is requested to use a client certificate in addition to user name and password. The server certificate is verified for authenticity by ION.
    Client SSL Keystore Password Specify client SSL keystore password.
    Import Client Certificate Import client private certificate.