Check to see if the SSH (Secure Shell) FTP session fails to start.
If the FTP client fails to connect, try a newer JRE.
When connecting through a firewall, the control connection may break down or the
data connection may time out. Refer to the IETF Internet-Draft FTP/TLS
Friendly Firewalls at http://www.ietf.org for more information
about running secure FTP through firewalls.
Check to see if the problem is security related.
Make sure that the server certificate is imported in the SSL keyring database
file. Also, if client authentication is enabled, make sure that the client
certificate is properly configured in the session configuration and a valid
password is entered when asked.
Check the SSL handshake flow by enabling FTPSession component trace level 2. The
flow is traced to the Java Console by the SSL Package.