I have an issue where a couple of clients are trying to connect to SFTP servers and are getting the same issue.
Basically what happens is the log shows "Setting up fallback kbi prompt based on supplied password" then a timeout connecting to the server occurs. Here's the log:
DEBUG [SFTPMessageStore] 5 Jan 2016 16:54:17.577 : Set timeout=60
DEBUG [SFTPMessageStore] 5 Jan 2016 16:54:17.640 : Set timeout=60000
INFO [LicenseProperties] 5 Jan 2016 16:54:17.686 : Licence expiry date: 12/31/9999
INFO [LicenseProperties] 5 Jan 2016 16:54:17.686 : Production license
DEBUG [FTPConnection] 5 Jan 2016 16:54:17.686 : Set LocalDirectory='C:\Windows\system32'
DEBUG [SecureFTPConnection] 5 Jan 2016 16:54:17.686 : Set LocalDirectory to C:\Windows\system32
INFO [LicenseProperties] 5 Jan 2016 16:54:17.686 : Licence expiry date: 12/31/9999
INFO [LicenseProperties] 5 Jan 2016 16:54:17.686 : Production license
DEBUG [SSHFTPClient] 5 Jan 2016 16:54:17.702 : Setting up fallback kbi prompt based on supplied password
DEBUG [HostNameResolver] 5 Jan 2016 16:54:17.718 : Resolving REDACTED
DEBUG [HostNameResolver] 5 Jan 2016 16:54:18.404 : Obtained 1 addresses
DEBUG [HostNameResolver] 5 Jan 2016 16:54:18.404 : IP address: REDACTED
DEBUG [HostNameResolver] 5 Jan 2016 16:54:18.404 : REDACTED resolved to 204.11.5.207
DEBUG [SSHFTPClient] 5 Jan 2016 16:54:18.404 : Connecting directly to SFTP server REDACTED:990
INFO [BaseSocket] 5 Jan 2016 16:54:18.404 : Connecting to REDACTED:990 with timeout 60000 ms
ERROR [BaseSocket] 5 Jan 2016 16:54:19.418 : Failed to connect to REDACTED:990 within timeout 60000 ms
They can connect using FileZilla.
I did notice in the history of updates that maybe an issue was resolved with this in 8.6.0:
- Fixed kbi re-entrant bug that causes a loop of authentication attempts.
We're using 8.5.0.20.
