FTP 426 Connection Time Out

[iebggmq]

Recently the clients reflect that they sometimes couldn't upload the files to the FTP server. Before I paste the log, I make some explaination:
we have three clients with different account:s1,s3 and errorClient; they all can upload and download files now and then.
FTP server 's connection time out is 3 minutes.
And now sometimes the errorClient could not upload the file completely (the file is about 880kb).
please check the FileZilla Server as bellow:

(207314) 2018-10-19 12:30:50 - (not logged in) (208.87.44.36)> Connected, sending welcome message...
(207314) 2018-10-19 12:30:50 - (not logged in) (208.87.44.36)> 220 Please visit My World
(207314) 2018-10-19 12:30:51 - (not logged in) (208.87.44.36)> USER errorClient
(207314) 2018-10-19 12:30:51 - (not logged in) (208.87.44.36)> 331 Password required for errorClient
(207314) 2018-10-19 12:30:51 - (not logged in) (208.87.44.36)> PASS ************
(207314) 2018-10-19 12:30:51 - errorClient (208.87.44.36)> 230 Logged on
(207314) 2018-10-19 12:30:51 - errorClient (208.87.44.36)> TYPE A N
(207314) 2018-10-19 12:30:51 - errorClient (208.87.44.36)> 200 Type set to A N
(207314) 2018-10-19 12:30:51 - errorClient (208.87.44.36)> CWD WMS/HAS/From-HAS
(207314) 2018-10-19 12:30:51 - errorClient (208.87.44.36)> 250 CWD successful. "/WMS/HAS/From-HAS" is current directory.
(207315) 2018-10-19 12:30:56 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207315) 2018-10-19 12:30:56 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207315) 2018-10-19 12:30:56 - (not logged in) (203.156.211.75)> USER s1
(207315) 2018-10-19 12:30:56 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207315) 2018-10-19 12:30:56 - (not logged in) (203.156.211.75)> PASS ************
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 230 Logged on
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> SYST
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> TYPE I
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 200 Type set to I
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> PORT 203,156,211,75,189,240
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 200 Port command successful
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> QUIT
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> 221 Goodbye
(207315) 2018-10-19 12:30:56 - s1 (203.156.211.75)> disconnected.
(207316) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207316) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207316) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> USER s1
(207316) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207316) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> PASS ************
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 230 Logged on
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> SYST
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> TYPE I
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 200 Type set to I
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> PORT 203,156,211,75,158,27
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 200 Port command successful
(207317) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207317) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207317) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> USER s1
(207317) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207317) 2018-10-19 12:30:57 - (not logged in) (203.156.211.75)> PASS ************
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 230 Logged on
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> QUIT
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 221 Goodbye
(207316) 2018-10-19 12:30:57 - s1 (203.156.211.75)> disconnected.
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> SYST
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> TYPE I
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 200 Type set to I
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> PORT 203,156,211,75,251,110
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 200 Port command successful
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> QUIT
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> 221 Goodbye
(207317) 2018-10-19 12:30:57 - s1 (203.156.211.75)> disconnected.
(207314) 2018-10-19 12:30:58 - errorClient (208.87.44.36)> CWD Customers
(207314) 2018-10-19 12:30:58 - errorClient (208.87.44.36)> 250 CWD successful. "/WMS/HAS/From-HAS/Customers" is current directory.
(207314) 2018-10-19 12:30:58 - errorClient (208.87.44.36)> PORT 208,87,44,36,41,5
(207314) 2018-10-19 12:30:58 - errorClient (208.87.44.36)> 200 Port command successful
(207318) 2018-10-19 12:30:58 - (not logged in) (222.68.188.27)> Connected, sending welcome message...
(207318) 2018-10-19 12:30:58 - (not logged in) (222.68.188.27)> 220 Please visit My World
(207318) 2018-10-19 12:30:58 - (not logged in) (222.68.188.27)> user s3
(207318) 2018-10-19 12:30:58 - (not logged in) (222.68.188.27)> 331 Password required for s3
(207318) 2018-10-19 12:30:58 - (not logged in) (222.68.188.27)> pass ************
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 230 Logged on
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> type I
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 200 Type set to I
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> syst
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 215 UNIX emulated by FileZilla
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> PWD
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 257 "/" is current directory.
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> CWD /wms/CL/IR/
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 250 CWD successful. "/wms/CL/IR" is current directory.
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> PWD
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 257 "/wms/CL/IR" is current directory.
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> PORT 222,68,188,26,152,222
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 200 Port command successful
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> nlst
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 150 Opening data channel for directory list.
(207318) 2018-10-19 12:30:58 - s3 (222.68.188.27)> 226 Successfully transferred ""
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> ABOR
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 226 ABOR command successful
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> disconnected.
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> Quit
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 221 Goodbye
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> could not send reply, disconnected.
(207318) 2018-10-19 12:30:59 - s3 (222.68.188.27)> disconnected.
(207319) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> Connected, sending welcome message...
(207319) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> 220 Please visit My World
(207319) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> user s3
(207319) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> 331 Password required for s3
(207319) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> pass ************
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 230 Logged on
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> type I
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 200 Type set to I
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> syst
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 215 UNIX emulated by FileZilla
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PWD
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 257 "/" is current directory.
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> CWD /wms/CL/DL/
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 250 CWD successful. "/wms/CL/DL" is current directory.
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PWD
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 257 "/wms/CL/DL" is current directory.
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PORT 222,68,188,26,152,224
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 200 Port command successful
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> nlst
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 150 Opening data channel for directory list.
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 226 Successfully transferred ""
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> ABOR
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 226 ABOR command successful
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> Quit
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 221 Goodbye
(207319) 2018-10-19 12:30:59 - s3 (222.68.188.27)> disconnected.
(207320) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> Connected, sending welcome message...
(207320) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> 220 Please visit My World
(207320) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> user s3
(207320) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> 331 Password required for s3
(207320) 2018-10-19 12:30:59 - (not logged in) (222.68.188.27)> pass ************
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 230 Logged on
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> type I
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 200 Type set to I
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> syst
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 215 UNIX emulated by FileZilla
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PWD
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 257 "/" is current directory.
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> CWD /wms/CL/TW/
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 250 CWD successful. "/wms/CL/TW" is current directory.
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PWD
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 257 "/wms/CL/TW" is current directory.
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> PORT 222,68,188,26,152,226
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 200 Port command successful
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> nlst
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 150 Opening data channel for directory list.
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 226 Successfully transferred ""
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> ABOR
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 226 ABOR command successful
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> Quit
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> 221 Goodbye
(207320) 2018-10-19 12:30:59 - s3 (222.68.188.27)> disconnected.
(207314) 2018-10-19 12:31:04 - errorClient (208.87.44.36)> STOR uploadfile.txt
(207314) 2018-10-19 12:31:04 - errorClient (208.87.44.36)> 150 Opening data channel for file upload to server of "/WMS/HAS/From-HAS/Customers/uploadfile.txt"
(207321) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207321) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207321) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> USER s1
(207321) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207321) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> PASS ************
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 230 Logged on
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> SYST
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207322) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207322) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> TYPE I
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 200 Type set to I
(207322) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> USER s1
(207322) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> PORT 203,156,211,75,145,186
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 200 Port command successful
(207322) 2018-10-19 12:32:04 - (not logged in) (203.156.211.75)> PASS ************
(207322) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 230 Logged on
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207322) 2018-10-19 12:32:04 - s1 (203.156.211.75)> SYST
(207322) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207321) 2018-10-19 12:32:04 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> TYPE I
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 200 Type set to I
(207321) 2018-10-19 12:32:05 - s1 (203.156.211.75)> QUIT
(207321) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 221 Goodbye
(207321) 2018-10-19 12:32:05 - s1 (203.156.211.75)> disconnected.
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> PORT 203,156,211,75,249,241
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 200 Port command successful
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> QUIT
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 221 Goodbye
(207322) 2018-10-19 12:32:05 - s1 (203.156.211.75)> disconnected.
(207323) 2018-10-19 12:32:05 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207323) 2018-10-19 12:32:05 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207323) 2018-10-19 12:32:05 - (not logged in) (203.156.211.75)> USER s1
(207323) 2018-10-19 12:32:05 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207323) 2018-10-19 12:32:05 - (not logged in) (203.156.211.75)> PASS ************
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 230 Logged on
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> SYST
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> TYPE I
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 200 Type set to I
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> PORT 203,156,211,75,160,236
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 200 Port command successful
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> QUIT
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> 221 Goodbye
(207323) 2018-10-19 12:32:05 - s1 (203.156.211.75)> disconnected.
(207324) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207324) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207324) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> USER s1
(207324) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207325) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207325) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207324) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> PASS ************
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 230 Logged on
(207325) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> USER s1
(207325) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> SYST
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207325) 2018-10-19 12:32:59 - (not logged in) (203.156.211.75)> PASS ************
(207325) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 230 Logged on
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> TYPE I
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 200 Type set to I
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> PORT 203,156,211,75,160,187
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 200 Port command successful
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> QUIT
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> 221 Goodbye
(207324) 2018-10-19 12:32:59 - s1 (203.156.211.75)> disconnected.
(207326) 2018-10-19 12:33:00 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207326) 2018-10-19 12:33:00 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207326) 2018-10-19 12:33:00 - (not logged in) (203.156.211.75)> USER s1
(207326) 2018-10-19 12:33:00 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207326) 2018-10-19 12:33:00 - (not logged in) (203.156.211.75)> PASS ************
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 230 Logged on
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> SYST
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> TYPE I
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 200 Type set to I
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> PORT 203,156,211,75,201,160
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 200 Port command successful
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> QUIT
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> 221 Goodbye
(207326) 2018-10-19 12:33:00 - s1 (203.156.211.75)> disconnected.
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> SYST
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> TYPE I
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 200 Type set to I
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> PORT 203,156,211,75,233,149
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 200 Port command successful
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> LIST /wms/CL/FS/
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS"
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS"
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> QUIT
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> 221 Goodbye
(207325) 2018-10-19 12:33:01 - s1 (203.156.211.75)> disconnected.
(207327) 2018-10-19 12:33:25 - (not logged in) (222.68.188.27)> Connected, sending welcome message...
(207327) 2018-10-19 12:33:25 - (not logged in) (222.68.188.27)> 220 Please visit My World
(207327) 2018-10-19 12:33:25 - (not logged in) (222.68.188.27)> user s3
(207327) 2018-10-19 12:33:25 - (not logged in) (222.68.188.27)> 331 Password required for s3
(207327) 2018-10-19 12:33:25 - (not logged in) (222.68.188.27)> pass ************
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 230 Logged on
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> type I
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 200 Type set to I
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> syst
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 215 UNIX emulated by FileZilla
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> PWD
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 257 "/" is current directory.
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> CWD /wms/has/from-has/product-master/
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 250 CWD successful. "/wms/has/from-has/product-master" is current directory.
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> PWD
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 257 "/wms/has/from-has/product-master" is current directory.
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> PASV
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 227 Entering Passive Mode (182,92,238,15,18,51)
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> nlst
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 150 Opening data channel for directory listing
(207327) 2018-10-19 12:33:25 - s3 (222.68.188.27)> 226 Successfully transferred ""
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> ABOR
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 226 ABOR command successful
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> disconnected.
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> Quit
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 221 Goodbye
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> could not send reply, disconnected.
(207327) 2018-10-19 12:33:26 - s3 (222.68.188.27)> disconnected.
(207328) 2018-10-19 12:33:26 - (not logged in) (222.68.188.27)> Connected, sending welcome message...
(207328) 2018-10-19 12:33:26 - (not logged in) (222.68.188.27)> 220 Please visit My World
(207328) 2018-10-19 12:33:26 - (not logged in) (222.68.188.27)> user s3
(207328) 2018-10-19 12:33:26 - (not logged in) (222.68.188.27)> 331 Password required for s3
(207328) 2018-10-19 12:33:26 - (not logged in) (222.68.188.27)> pass ************
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 230 Logged on
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> type I
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 200 Type set to I
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> syst
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 215 UNIX emulated by FileZilla
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> PWD
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 257 "/" is current directory.
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> CWD /wms/has/from-has/customers/
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 250 CWD successful. "/wms/has/from-has/customers" is current directory.
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> PWD
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 257 "/wms/has/from-has/customers" is current directory.
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> PASV
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 227 Entering Passive Mode (182,92,238,15,18,52)
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> nlst
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 150 Opening data channel for directory listing
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 226 Successfully transferred ""
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> PASV
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 227 Entering Passive Mode (182,92,238,15,18,53)
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> retr /wms/has/from-has/customers/uploadfile.txt
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 150 Opening data channel for file download from server of "/wms/has/from-has/customers/uploadfile.txt"
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 550 can't access file.
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> ABOR
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 226 ABOR command successful
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> Quit
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> 221 Goodbye
(207328) 2018-10-19 12:33:26 - s3 (222.68.188.27)> disconnected.
(207329) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207329) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207329) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> USER s1
(207329) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207329) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> PASS ************
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 230 Logged on
(207330) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207330) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> SYST
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207330) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> USER s1
(207330) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> TYPE I
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Type set to I
(207330) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> PASS ************
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 230 Logged on
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> PORT 203,156,211,75,224,246
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Port command successful
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> SYST
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> TYPE I
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Type set to I
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207331) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> Connected, sending welcome message...
(207331) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 220 Please visit My World
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> PORT 203,156,211,75,194,42
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Port command successful
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> QUIT
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 221 Goodbye
(207329) 2018-10-19 12:34:04 - s1 (203.156.211.75)> disconnected.
(207331) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> USER s1
(207331) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> 331 Password required for s1
(207331) 2018-10-19 12:34:04 - (not logged in) (203.156.211.75)> PASS ************
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 230 Logged on
(207330) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> SYST
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 215 UNIX emulated by FileZilla
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> TYPE I
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Type set to I
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> PORT 203,156,211,75,249,35
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 200 Port command successful
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> LIST /wms/CL/FS/test/
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 150 Opening data channel for directory listing of "/wms/CL/FS/test"
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 226 Successfully transferred "/wms/CL/FS/test"
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> QUIT
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> 221 Goodbye
(207331) 2018-10-19 12:34:04 - s1 (203.156.211.75)> disconnected.
(207330) 2018-10-19 12:34:05 - s1 (203.156.211.75)> QUIT
(207330) 2018-10-19 12:34:05 - s1 (203.156.211.75)> 221 Goodbye
(207330) 2018-10-19 12:34:05 - s1 (203.156.211.75)> disconnected.
(207314) 2018-10-19 12:34:49 - errorClient (208.87.44.36)> 426 Connection timed out, aborting transfer of "/WMS/HAS/From-HAS/Customers/uploadfile.txt"
(207314) 2018-10-19 12:34:49 - errorClient (208.87.44.36)> 421 Connection timed out.
(207314) 2018-10-19 12:34:49 - errorClient (208.87.44.36)> disconnected.

now still can't fight out the reason why it happened, would someone know, please advise and thank you for your kindness.

[botg]

Could be any number of reasons. Usually it's a firewall interfering with the connection in some way.

If there are no firewalls running on the server machine and the problem persists, look at what is actually being transmitted over the network using a network sniffer such as Wireshark. In particular, does the client send a TCP packet with the FIN flag set?