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Old 01-16-2012, 03:42 PM   #1
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Exclamation SFTP Connection Closed v4.1.8 (Build 1701)

I cannot connect to the SFTP server. I get the following log:

FlashFXP 4.1.8 (build 1701)
Support Forums http://forum.flashfxp.com
Winsock 2.2 -- OpenSSL 1.0.0f 4 Jan 2012
[R] Connecting to Secure FTP -> DNS=###### IP=xxx.xxx.xxx.xxx PORT=22
[R] Connected to Secure FTP
[R] Host key algorithm ssh-RSA, size 2048 bits.
[R] Fingerprint (MD5): 21:0b:61:db:55:71:6a:e1:11:b4:d4:1b:3a:d5:b7:bf
[R] Key exchange: diffie-hellman-group14-sha1. Session encryption: aes256-ctr, MAC: hmac-sha1, compression: none.
[R] Auth Type: Keyboard-interactive
[R] Keyboard Authentication Requested. Prompt (0) "Password: "
[R] Keyboard Authentication, Password Sent.
[R] Authentication succeeded
[R] SSH Connection open
[R] SSH Connection closed
[R] Connection failed
[R] Delaying for 120 seconds before reconnect attempt #1
[R] Retry attempt Aborted
This used to work before but does not work anymore. As you can see the authentication was successful.

Where does FlashFXP save the server key? Maybe deleting this key will help me solve the problem.

FYI, I am using Windows 7 Professional SP1 64-bit.

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Old 01-16-2012, 08:24 PM   #2
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Posts: 8,012


What build did you upgrade from?

It looks like the SSH connection is open and authenticated but then when requesting the SFTP sub-system the SSH connection is closed. Often this can be a result of a problem on the server.

Since there is no error message it can be quite difficult to diagnose this type of issue.

FlashFXP doesn't save the server session key. It is only kept in memory during the current session.

I'm really not quite sure if this issue is caused by something we changed in FlashFXP as the only change in the SFTP engine was that we improved the error reporting, where in some cases the error was being hidden from the user.
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Old 01-17-2012, 08:22 AM   #3
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Posts: 7


I don't know what was the old build number but I do know things were working fine say 2-3 months ago when I was using this SFTP server. Nothing on the server as changed other than the fact that I have upgrade to the latest FlashFXP version couple of times since I last used this server. I tried to find older versions of FlashFXP on your server but could not locate where the archived versions can be downloaded so that I can check if things work fine with an older version.

Could you provide a link to archieved versions so that I can test and report back which version of FlashFXP broke SFTP access for me?

achugh is offline  
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build, flashfxp, ftp, sftp, [r], sftp, 1701, v4.1.8, closed, connection

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