By esiao
Hello I have a problem. I followed this tutorial : https://www.digitalocean.com/community/tutorials/how-to-use-filezilla-to-transfer-and-manage-files-securely-on-your-vps
It was working for months but since a week it’s not working anymore. I haven’t change anything and I’m not able to understand what’s happening through Filezilla’s log. Here it is.
Response: fzSftp started
Trace: CSftpControlSocket::ConnectParseResponse(fzSftp started)
Trace: CSftpControlSocket::SendNextCommand()
Trace: CSftpControlSocket::ConnectSend()
Command: keyfile "C:\Users\Aurélien\my_keys\gg_private.ppk"
Trace: CSftpControlSocket::ConnectParseResponse()
Trace: CSftpControlSocket::SendNextCommand()
Trace: CSftpControlSocket::ConnectSend()
Command: open "xxx@xxx.xxx.xxx.xxx" 22
Trace: Looking up host "xxx.xxx.xxx.xxx"
Trace: Connecting to xxx.xxx.xxx.xxx port 22
Trace: We claim version: SSH-2.0-PuTTY_Local:_Jan__7_2015_14:17:27
Trace: Server version: SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
Trace: We believe remote version has SSH-2 channel request bug
Trace: Using SSH protocol version 2
Trace: Doing ECDH key exchange with hash SHA-256
Trace: Host key fingerprint is:
Trace: ecdsa-sha2-nistp256 d5:e8:ca:a6:69:ae:dd:68:21:07:1d:17:c7:48:86:9b
Command: Trust new Hostkey: Once
Trace: Initialised AES-256 SDCTR client->server encryption
Trace: Initialised HMAC-SHA-256 client->server MAC algorithm
Trace: Initialised AES-256 SDCTR server->client encryption
Trace: Initialised HMAC-SHA-256 server->client MAC algorithm
Trace: CControlSocket::DoClose(64)
Trace: CSftpControlSocket::ResetOperation(66)
Trace: CControlSocket::ResetOperation(66)
Error: Could not connect to server
Trace: CFileZillaEnginePrivate::ResetOperation(66)
Status: Waiting to retry...
It seems to be a server problem as stated here
Trace: We believe remote version has SSH-2 channel request bug
Thanks for the help you could bring me.
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Can be. But you can’t completely blame the server. There are multiple solutions for this
- Update your putty
- Modify ‘Algorithm Selection policy’ (In putty, Connection > SSH > Kex) in putty. Some policy may not work with the server. You need to change the order in it. ‘Diffie-Helman group 14’ or ‘Diffie-Helman group exchange’ on the top will normally work.
Most of the cases these worked for me.
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