Opened 4 years ago

Closed 4 years ago

Last modified 4 years ago

#10644 closed Bug report (rejected)

Can no longer connect to server

Reported by: bluespy Owned by:
Priority: normal Component: FileZilla Client
Keywords: sftp, software caused connection abort Cc:
Component version: 3.13.1 Operating system type: Windows
Operating system version: Windows 10

Description

Since I updated to the latest version (3.13.1), I could no longer connect to one of my FTP servers using sftp. There were no changes on the server side, and nothing out of the blue seems to happening.

This issue was also in the 3.13 version, though I did not report the bug at the time. The last working version that was able to connect to the server is 3.12.0.2.

Here is log from filezilla:

2015-08-30 15:30:13 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:13 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:13 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:13 16608 1 Error: Network error: Software caused connection abort
2015-08-30 15:30:13 16608 1 Error: Could not connect to server
2015-08-30 15:30:13 16608 1 Status: Waiting to retry...
2015-08-30 15:30:18 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:18 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:18 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:18 16608 1 Error: Network error: Software caused connection abort
2015-08-30 15:30:18 16608 1 Error: Could not connect to server
2015-08-30 15:30:18 16608 1 Status: Waiting to retry...
2015-08-30 15:30:23 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:23 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:23 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:23 16608 1 Error: Network error: Connection reset by peer
2015-08-30 15:30:23 16608 1 Error: Could not connect to server
2015-08-30 15:30:23 16608 1 Status: Waiting to retry...
2015-08-30 15:30:28 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:28 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:28 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:28 16608 1 Error: Network error: Software caused connection abort
2015-08-30 15:30:28 16608 1 Error: Could not connect to server
2015-08-30 15:30:28 16608 1 Status: Waiting to retry...
2015-08-30 15:30:33 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:33 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:33 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:34 16608 1 Error: Network error: Software caused connection abort
2015-08-30 15:30:34 16608 1 Error: Could not connect to server
2015-08-30 15:30:34 16608 1 Status: Waiting to retry...
2015-08-30 15:30:39 16608 1 Status: Connecting to 139.255.47.238...
2015-08-30 15:30:39 16608 1 Response: fzSftp started, protocol_version=3
2015-08-30 15:30:39 16608 1 Command: open "user@139.255.47.238" 22
2015-08-30 15:30:40 16608 1 Error: Connection attempt interrupted by user

Change History (11)

comment:1 Changed 4 years ago by bluespy

Priority: highcritical

comment:2 Changed 4 years ago by bluespy

Priority: criticalnormal
Version 0, edited 4 years ago by bluespy (next)

comment:3 Changed 4 years ago by Alexander Schuch

Can you set your log level to "debug" and post *one* connection attempt?

comment:4 Changed 4 years ago by Alexander Schuch

Status: newmoreinfo

comment:5 Changed 4 years ago by bluespy

Status: moreinfonew

Log with debug status on, as below:

Status: Connecting to 139.255.47.238...
Trace: Going to execute C:\Program Files (x86)\FileZilla FTP Client\fzsftp.exe
Response: fzSftp started, protocol_version=3
Trace: CSftpControlSocket::ConnectParseResponse(fzSftp started, protocol_version=3)
Trace: CSftpControlSocket::SendNextCommand()
Trace: CSftpControlSocket::ConnectSend()
Command: open "user@139.255.47.238" 22
Trace: Looking up host "139.255.47.238"
Trace: Connecting to 139.255.47.238 port 22
Trace: We claim version: SSH-2.0-PuTTY_Local:_Aug_24_2015_15:56:07
Trace: Server version: SSH-2.0-CoreFTP-0.3.2
Trace: Using SSH protocol version 2
Trace: Network error: Software caused connection abort
Error: Network error: Software caused connection abort
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...
Trace: CControlSocket::DoClose(64)
Trace: CControlSocket::DoClose(64)
Status: Connecting to 139.255.47.238...
Trace: Going to execute C:\Program Files (x86)\FileZilla FTP Client\fzsftp.exe
Response: fzSftp started, protocol_version=3
Trace: CSftpControlSocket::ConnectParseResponse(fzSftp started, protocol_version=3)
Trace: CSftpControlSocket::SendNextCommand()
Trace: CSftpControlSocket::ConnectSend()
Command: open "user@139.255.47.238" 22
Trace: Looking up host "139.255.47.238"
Trace: Connecting to 139.255.47.238 port 22
Trace: We claim version: SSH-2.0-PuTTY_Local:_Aug_24_2015_15:56:07
Trace: Server version: SSH-2.0-CoreFTP-0.3.2
Trace: Using SSH protocol version 2
Trace: Using Diffie-Hellman with standard group "group14"
Trace: Doing Diffie-Hellman key exchange with hash SHA-1
Trace: Network error: Software caused connection abort
Error: Network error: Software caused connection abort
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...
Trace: CControlSocket::DoClose(64)
Trace: CControlSocket::DoClose(64)
Error: Connection attempt interrupted by user

comment:6 Changed 4 years ago by Tim Kosse

Resolution: rejected
Status: newclosed

The server is on the fritz. Please contact your server administrator or server hosting provider for assistance so that the server can be fixed.

comment:7 Changed 4 years ago by bluespy

I could still connect with it normally with version (3.12.0.2).
Even now, I just downgraded to that version so I could connect to that server.

comment:8 Changed 4 years ago by bluespy

Resolution: rejected
Status: closedreopened

comment:9 Changed 4 years ago by Tim Kosse

Resolution: rejected
Status: reopenedclosed

Your server chokes on a Key Exchange Init packets containing many algorithms.

Recent versions of FileZilla support more algorithms than previous versions.

If using other clients that support many algorithms, such as OpenSSH, the connection to your server fails as well.

comment:10 Changed 4 years ago by bluespy

Client? So, it's the issue with OpenSSH on client side?

Thanks for the explanation.

comment:11 Changed 4 years ago by Tim Kosse

As I said multiple times before, it's a server-side issue.

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