Filezilla failure, error log
----------------------------

Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 0
Status:	Resolving address of ftp.dsdinc.com
Status:	Connecting to 12.147.22.88:21...
Status:	Connection established, waiting for welcome message...
Trace:	CFtpControlSocket::OnReceive()
Response:	220 Serv-U FTP Server v15.1 ready...
Trace:	CFtpLogonOpData::ParseResponse() in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 2
Command:	AUTH TLS
Trace:	CFtpControlSocket::OnReceive()
Response:	234 AUTH command OK. Initializing SSL connection.
Trace:	CFtpLogonOpData::ParseResponse() in state 2
Status:	Initializing TLS...
Trace:	CTlsSocketImpl::Handshake()
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	TLS Handshake successful
Trace:	Protocol: TLS1.2, Key exchange: ECDHE-RSA, Cipher: AES-256-GCM, MAC: AEAD
Status:	Verifying certificate...
Status:	TLS connection established.
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 5
Command:	USER Cust7Admin
Trace:	CFtpControlSocket::OnReceive()
Response:	331 User name okay, need password.
Trace:	CFtpLogonOpData::ParseResponse() in state 5
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 5
Command:	PASS *********
Trace:	CFtpControlSocket::OnReceive()
Response:	230-User logged in, proceed.
Response:	230 Welcome to DSD Business Systems.
Trace:	CFtpLogonOpData::ParseResponse() in state 5
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 6
Command:	SYST
Trace:	CFtpControlSocket::OnReceive()
Response:	215 UNIX Type: L8
Trace:	CFtpLogonOpData::ParseResponse() in state 6
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 7
Command:	FEAT
Trace:	CFtpControlSocket::OnReceive()
Response:	211-Extensions supported
Response:	 UTF8
Response:	 OPTS MODE;MLST;UTF8
Response:	 CLNT
Response:	 CSID Name; Version;
Response:	 HOST domain
Response:	 SITE PSWD;SET;ZONE;CHMOD;MSG;EXEC;HELP
Response:	 AUTH TLS;SSL;TLS-C;TLS-P;
Response:	 PBSZ
Response:	 PROT
Response:	 CCC
Response:	 SSCN
Response:	 RMDA directoryname
Response:	 DSIZ
Response:	 AVBL
Response:	 EPRT
Response:	 EPSV
Response:	 MODE Z
Response:	 THMB BMP|JPEG|GIF|TIFF|PNG max_width max_height pathname
Response:	 REST STREAM
Response:	 SIZE
Response:	 MDTM
Response:	 MDTM YYYYMMDDHHMMSS[+-TZ];filename
Response:	 MFMT
Response:	 MFCT
Response:	 MFF Create;Modify;
Response:	 XCRC filename;start;end
Response:	 XMD5 filename;start;end
Response:	 XSHA1 filename;start;end
Response:	 XSHA256 filename;start;end
Response:	 XSHA512 filename;start;end
Response:	 COMB target;source_list
Response:	 MLST Type*;Size*;Create;Modify*;Perm;Win32.ea;Win32.dt;Win32.dl
Response:	211 End (for details use "HELP commmand" where command is the command of interest)
Trace:	CFtpLogonOpData::ParseResponse() in state 7
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 8
Command:	CLNT FileZilla
Trace:	CFtpControlSocket::OnReceive()
Response:	200 Noted.
Trace:	CFtpLogonOpData::ParseResponse() in state 8
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 9
Command:	OPTS UTF8 ON
Trace:	CFtpControlSocket::OnReceive()
Response:	200 OPTS UTF8 is set to ON.
Trace:	CFtpLogonOpData::ParseResponse() in state 9
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 10
Command:	PBSZ 0
Trace:	CFtpControlSocket::OnReceive()
Response:	200 PBSZ command OK. Protection buffer size set to 0.
Trace:	CFtpLogonOpData::ParseResponse() in state 10
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 11
Command:	PROT P
Trace:	CFtpControlSocket::OnReceive()
Response:	200 PROT command OK. Using private data connection.
Trace:	CFtpLogonOpData::ParseResponse() in state 11
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpLogonOpData::Send() in state 12
Command:	OPTS MLST type;size;modify;perm;
Trace:	CFtpControlSocket::OnReceive()
Response:	200 MLST OPTS Type;Size;Modify;Perm;
Trace:	CFtpLogonOpData::ParseResponse() in state 12
Status:	Logged in
Trace:	Measured latency of 45 ms
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Status:	Retrieving directory listing...
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpListOpData::ListSend() in state 0
Trace:	CFtpChangeDirOpData::Send() in state 0
Trace:	CFtpChangeDirOpData::Send() in state 1
Command:	PWD
Trace:	CFtpControlSocket::OnReceive()
Response:	257 "/" is current directory.
Trace:	CFtpChangeDirOpData::ParseResponse() in state 1
Trace:	CFtpControlSocket::ResetOperation(0)
Trace:	CControlSocket::ResetOperation(0)
Trace:	CControlSocket::ParseSubcommandResult(0)
Trace:	CFtpListOpData::SubcommandResult() in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpListOpData::ListSend() in state 2
Trace:	CFtpRawTransferOpData::Send() in state 1
Command:	TYPE I
Trace:	CFtpControlSocket::OnReceive()
Response:	200 Type set to I.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 1
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 2
Command:	PASV
Trace:	CFtpControlSocket::OnReceive()
Response:	227 Entering Passive Mode (12,147,22,88,175,200)
Trace:	CFtpRawTransferOpData::ParseResponse() in state 2
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 4
Trace:	Binding data connection source IP to control connection source IP 172.16.7.2
Command:	MLSD
Trace:	CFtpControlSocket::OnReceive()
Response:	150 Opening BINARY mode data connection for MLSD.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 4
Trace:	CControlSocket::SendNextCommand()
Trace:	CFtpRawTransferOpData::Send() in state 5
Trace:	CTransferSocket::OnConnect
Trace:	CTlsSocketImpl::Handshake()
Trace:	Trying to resume existing TLS session.
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	CTlsSocketImpl::ContinueHandshake()
Trace:	CTlsSocketImpl::OnSocketEvent(): close event received
Trace:	CTransferSocket::OnClose(0)
Trace:	CTransferSocket::TransferEnd(1)
Trace:	CFtpControlSocket::TransferEnd()
Trace:	CFtpControlSocket::OnReceive()
Response:	426 Data connection closed, SSL / TLS negotiation failed.
Trace:	CFtpRawTransferOpData::ParseResponse() in state 7
Trace:	CFtpControlSocket::ResetOperation(2)
Trace:	CControlSocket::ResetOperation(2)
Trace:	CControlSocket::ParseSubcommandResult(2)
Trace:	CFtpListOpData::SubcommandResult() in state 3
Trace:	CFtpControlSocket::ResetOperation(2)
Trace:	CControlSocket::ResetOperation(2)
Error:	Failed to retrieve directory listing







FileZilla Client
----------------

Version:          3.28.0

Build information:
  Compiled for:   x86_64-w64-mingw32
  Compiled on:    x86_64-pc-linux-gnu
  Build date:     2017-09-29
  Compiled with:  x86_64-w64-mingw32-gcc (GCC) 6.3.0 20170516
  Compiler flags: -g -O2 -Wall

Linked against:
  wxWidgets:      3.0.4
  SQLite:         3.19.3
  GnuTLS:         3.5.13

Operating system:
  Name:           Windows 10 (build 15063), 64-bit edition
  Version:        10.0
  Platform:       64-bit system
  CPU features:   sse sse2 sse3 ssse3 sse4.1 sse4.2 avx avx2 aes pclmulqdq rdrnd bmi2 bmi2
  Settings dir:   C:\Users\Ronald\AppData\Roaming\FileZilla\





Server info
-----------


Remote system = UNIX Type: L8
File transfer protocol = FTP
Compression = No
------------------------------------------------------------
Can change permissions = Yes
Can change owner/group = No
Can execute arbitrary command = Protocol commands only
Can create symbolic/hard link = No/No
Can lookup user groups = No
Can duplicate remote files = No
Can check available space = Yes
Can calculate file checksum = Yes
Native text (ASCII) mode transfers = No
------------------------------------------------------------
Additional information
The server supports these FTP additional features:
  UTF8
  OPTS MODE;MLST;UTF8
  CLNT
  CSID Name; Version;
  HOST domain
  SITE PSWD;SET;ZONE;CHMOD;MSG;EXEC;HELP
  AUTH TLS;SSL;TLS-C;TLS-P;
  PBSZ
  PROT
  CCC
  SSCN
  RMDA directoryname
  DSIZ
  AVBL
  EPRT
  EPSV
  MODE Z
  THMB BMP|JPEG|GIF|TIFF|PNG max_width max_height pathname
  REST STREAM
  SIZE
  MDTM
  MDTM YYYYMMDDHHMMSS[+-TZ];filename
  MFMT
  MFCT
  MFF Create;Modify;
  XCRC filename;start;end
  XMD5 filename;start;end
  XSHA1 filename;start;end
  XSHA256 filename;start;end
  XSHA512 filename;start;end
  COMB target;source_list
  MLST Type*;Size*;Create;Modify*;Perm;Win32.ea;Win32.dt;Win32.dl
------------------------------------------------------------
Total bytes on device = Unknown
Free bytes on device = Unknown
Total bytes for user = Unknown
Free bytes for user = 1,807 GB (1,940,434,280,448 B)
Bytes per allocation unit = Unknown