Problems with SFTP connection

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danif_de
Newbie
Newbie
Posts: 3
Joined: Mon Oct 23, 2017 12:26 pm

Problems with SFTP connection

Postby danif_de » Mon Oct 23, 2017 12:55 pm

Hello,
we some have some Problems with a sftp-connection, like this:

23.10.2017 14:47:32: SyncBackPro V8.3.6.0 (x64)
23.10.2017 14:47:32: Windows 2016 x64 build 14393
23.10.2017 14:47:32: Resolving host name "sap-test.xxxxxx.info"
23.10.2017 14:47:32: Connecting to 134.xxx.xxx.86 Port: 22
23.10.2017 14:47:32: SSH-2.0-OpenSSH_7.5p1-hpn14v12
23.10.2017 14:47:32: Starting SSH session. Remote Id: "SSH-2.0-OpenSSH_7.5p1-hpn14v12"
23.10.2017 14:47:32: SSH protocol version reply. Client Id: "SSH-2.0-SmartFTP"
23.10.2017 14:47:32: Key exchange failed.
23.10.2017 14:47:32: Client closed the connection.
23.10.2017 14:47:32: Resolving host name "sap-test.xxxxxxx.info"
23.10.2017 14:47:32: Connecting to 134.xxx.xxx.86 Port: 22
23.10.2017 14:47:32: SSH-2.0-OpenSSH_7.5p1-hpn14v12
23.10.2017 14:47:32: Starting SSH session. Remote Id: "SSH-2.0-OpenSSH_7.5p1-hpn14v12"
23.10.2017 14:47:32: SSH protocol version reply. Client Id: "SSH-2.0-SmartFTP"
23.10.2017 14:47:32: Key exchange failed.
23.10.2017 14:47:32: Client closed the connection.

I think this SFTP uses newer algorythm to crypt and decrypt than yours in the syncback.
The Connection with this SFTP-Server on the same Server works with the programs filezilla or winscp.
Is there any update for the decryption algorythms in the near future?
Daniel

Swapna
2BrightSparks Staff
2BrightSparks Staff
Posts: 484
Joined: Mon Apr 13, 2015 6:22 am

Re: Problems with SFTP connection

Postby Swapna » Tue Oct 24, 2017 7:52 am

Hi,

Can you please enable the option "Use alternative SFTP component (usually faster)" under:

Modify > Expert > FTP settings page

and test the connection to see if it helps?

Thank you.

danif_de
Newbie
Newbie
Posts: 3
Joined: Mon Oct 23, 2017 12:26 pm

Re: Problems with SFTP connection

Postby danif_de » Wed Oct 25, 2017 11:17 am

Hi,
i enable the Option but it doesn´t work.
Sorry no improvement.

Swapna
2BrightSparks Staff
2BrightSparks Staff
Posts: 484
Joined: Mon Apr 13, 2015 6:22 am

Re: Problems with SFTP connection

Postby Swapna » Thu Oct 26, 2017 12:13 am

Hi,

Please submit a support zip with debug logs for investigation. Full instructions for creating and submitting the support zip are given here:

http://support.2brightsparks.com/knowle ... ation-file

If your Zip is over 30MB, contact us for alternate instructions, advising the actual size. Do not try to attach to the ticket!

Do not post (nor links to) Support Zips on this open forum.

Thank you.

danif_de
Newbie
Newbie
Posts: 3
Joined: Mon Oct 23, 2017 12:26 pm

Re: Problems with SFTP connection

Postby danif_de » Thu Oct 26, 2017 4:59 am

Hi,
i submit a Support zip with your Support contact page. Another tool thats works with this SFTP-Connection debug this:

Trace: CSftpConnectOpData::ParseResponse() in state 0
Trace: CControlSocket::SendNextCommand()
Trace: CSftpConnectOpData::Send() in state 3
Command: open "248932xxxxxxxxxxx@xxxxxxxxxx.info" 22
Trace: Connecting to 134.xxx.xxxx.86 port 22
Trace: We claim version: SSH-2.0-FileZilla_3.27.1
Trace: Server version: SSH-2.0-OpenSSH_7.5p1-hpn14v12
Trace: Using SSH protocol version 2
Trace: Doing ECDH key exchange with curve Curve25519 and hash SHA-256
Trace: Host key fingerprint is:
Trace: ssh-rsa 2048 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxVucTC+bLgG+T+GIjGB4=
Trace: Initialised AES-256 GCM client->server encryption
Trace: Initialised AES256 GCM client->server MAC algorithm (in ETM mode) (required by cipher)
Trace: Initialised AES-256 GCM server->client encryption
Trace: Initialised AES256 GCM server->client MAC algorithm (in ETM mode) (required by cipher)
Trace: Attempting keyboard-interactive authentication
Trace: Using keyboard-interactive authentication. inst_len: 0, num_prompts: 1
Command: Pass: ************
Trace: Access granted
Trace: Opening session as main channel
Trace: Opened main channel
Trace: Started a shell/command
Status: Connected to sap-live.tritec.info
Trace: CSftpConnectOpData::ParseResponse() in state 3
Trace: CControlSocket::ResetOperation(0)
Trace: CSftpConnectOpData::Reset(0) in state 3
Trace: CFileZillaEnginePrivate::ResetOperation(0)
Status: Retrieving directory listing...
Trace: CControlSocket::SendNextCommand()
Trace: CSftpListOpData::Send() in state 0
Trace: CSftpChangeDirOpData::Send() in state 0
Trace: CSftpChangeDirOpData::Send() in state 1
Command: pwd
Response: Current directory is: "/"
Trace: CSftpChangeDirOpData::ParseResponse() in state 1
Trace: CControlSocket::ResetOperation(0)
Trace: CControlSocket::ParseSubcommandResult(0)
Trace: CSftpListOpData::SubcommandResult() in state 1
Trace: CControlSocket::SendNextCommand()
Trace: CSftpListOpData::Send() in state 2
Trace: CControlSocket::ResetOperation(0)
Status: Directory listing of "/" successful

Maybe this helps us to solve the Problem.

Thanks


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