Error listing directory '/'.

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shoutbomb
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2

Error listing directory '/'.

Hello,

A client of mine is encountering this connections issue and I am not able to replicate. I use the same version of WinSCP and am able to logon to the ftp server using the same credentials they are using.

WinSCP info

Remote system = UNIX emulated by FileZilla
File transfer protocol = FTP
Cryptographic protocol = TLS/SSL Implicit encryption, TLSv1.2
Encryption algorithm = TLSv1/SSLv3: ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH     Au=RSA  Enc=AESGCM(256) Mac=AEAD

Compression = No
------------------------------------------------------------
Certificate fingerprint
*removed*
------------------------------------------------------------
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 = No
Can calculate file checksum = No
Native text (ASCII) mode transfers = No
------------------------------------------------------------
Additional information
The server supports these FTP additional features:
  MDTM
  REST STREAM
  SIZE
  MLST type*;size*;modify*;
  MLSD
  AUTH SSL
  AUTH TLS
  PROT
  PBSZ
  UTF8
  CLNT
  MFMT
  EPSV
  EPRT

The following is the WinSCP log

. 2017-02-28 12:30:21.620 --------------------------------------------------------------------------
. 2017-02-28 12:30:21.620 WinSCP Version 5.9.4 (Build 7333) (OS 6.3.9600 - Windows Server 2012 R2 Standard)
. 2017-02-28 12:30:21.620 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\
. 2017-02-28 12:30:21.620 Log level: Debug 2
. 2017-02-28 12:30:21.620 Local account: SBPROXY\Kate
. 2017-02-28 12:30:21.620 Working directory: C:\Program Files (x86)\WinSCP
. 2017-02-28 12:30:21.620 Process ID: 256
. 2017-02-28 12:30:21.620 Command-line: "C:\Program Files (x86)\WinSCP\WinSCP.exe" 
. 2017-02-28 12:30:21.620 Time zone: Current: GMT-5, Standard: GMT-5 (Eastern Standard Time), DST: GMT-4 (Eastern Daylight Time), DST Start: 3/12/2017, DST End: 11/5/2017
. 2017-02-28 12:30:21.620 Login time: Tuesday, February 28, 2017 12:30:21 PM
. 2017-02-28 12:30:21.620 --------------------------------------------------------------------------
. 2017-02-28 12:30:21.620 Session name: DUMMYDUMMY (Site)
. 2017-02-28 12:30:21.620 Host name: ftp.DUMMYDUMMY.com (Port: 990)
. 2017-02-28 12:30:21.620 User name: DUMMY01 (Password: Yes, Key file: No, Passphrase: No)
. 2017-02-28 12:30:21.620 Transfer Protocol: FTP
. 2017-02-28 12:30:21.620 Ping type: Off, Ping interval: 30 sec; Timeout: 15 sec
. 2017-02-28 12:30:21.620 Disable Nagle: No
. 2017-02-28 12:30:21.620 Proxy: None
. 2017-02-28 12:30:21.620 Send buffer: 262144
. 2017-02-28 12:30:21.620 UTF: Auto
. 2017-02-28 12:30:21.620 FTPS: Implicit TLS/SSL [Client certificate: No]
. 2017-02-28 12:30:21.620 FTP: Passive: Yes [Force IP: Auto]; MLSD: Auto [List all: Auto]; HOST: Auto
. 2017-02-28 12:30:21.620 Session reuse: Yes
. 2017-02-28 12:30:21.620 TLS/SSL versions: TLSv1.0-TLSv1.2
. 2017-02-28 12:30:21.620 Local directory: C:\DUMMYDUMMY\FTP, Remote directory: /, Update: Yes, Cache: Yes
. 2017-02-28 12:30:21.620 Cache directory changes: Yes, Permanent: Yes
. 2017-02-28 12:30:21.620 Recycle bin: Delete to: No, Overwritten to: No, Bin path: 
. 2017-02-28 12:30:21.620 Timezone offset: 0h 0m
. 2017-02-28 12:30:21.620 --------------------------------------------------------------------------
. 2017-02-28 12:30:22.042 Session upkeep
. 2017-02-28 12:30:22.307 Connecting to ftp.DUMMYDUMMY.com:990 ...
. 2017-02-28 12:30:22.307 TLS layer changed state from unconnected to connecting
. 2017-02-28 12:30:22.307 TLS layer changed state from connecting to connected
. 2017-02-28 12:30:22.307 Connected with ftp.DUMMYDUMMY.com:990, negotiating TLS connection...
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 read server hello A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 read server certificate A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 read server key exchange A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 read server done A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 write client key exchange A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 write change cipher spec A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 write finished A
. 2017-02-28 12:30:22.307 TLS connect: SSLv3 flush data
. 2017-02-28 12:30:22.354 TLS connect: SSLv3 read server session ticket A
. 2017-02-28 12:30:22.354 TLS connect: SSLv3 read finished A
. 2017-02-28 12:30:22.354 Verifying certificate for "DUMMYDUMMY, LLC" with fingerprint *removed* and 18 failures
. 2017-02-28 12:30:22.354 Certificate common name "ftp.DUMMYDUMMY.com" matches hostname
. 2017-02-28 12:30:22.354 Certificate for "DUMMYDUMMY, LLC" matches cached fingerprint and failures
. 2017-02-28 12:30:22.354 Using TLSv1.2, cipher TLSv1/SSLv3: ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA, ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH     Au=RSA  Enc=AESGCM(256) Mac=AEAD
. 2017-02-28 12:30:22.370 TLS connection established. Waiting for welcome message...
< 2017-02-28 12:30:22.370 220 Hello...now where to begin
> 2017-02-28 12:30:22.370 USER DUMMY01
< 2017-02-28 12:30:22.417 331 Password required for DUMMY01
> 2017-02-28 12:30:22.417 PASS **************
< 2017-02-28 12:30:22.495 230 Logged on
> 2017-02-28 12:30:22.495 SYST
< 2017-02-28 12:30:22.573 215 UNIX emulated by FileZilla
> 2017-02-28 12:30:22.573 FEAT
< 2017-02-28 12:30:22.636 211-Features:
< 2017-02-28 12:30:22.636  MDTM
< 2017-02-28 12:30:22.636  REST STREAM
< 2017-02-28 12:30:22.636  SIZE
< 2017-02-28 12:30:22.636  MLST type*;size*;modify*;
< 2017-02-28 12:30:22.636  MLSD
< 2017-02-28 12:30:22.636  AUTH SSL
< 2017-02-28 12:30:22.636  AUTH TLS
< 2017-02-28 12:30:22.636  PROT
< 2017-02-28 12:30:22.636  PBSZ
< 2017-02-28 12:30:22.636  UTF8
< 2017-02-28 12:30:22.636  CLNT
< 2017-02-28 12:30:22.636  MFMT
< 2017-02-28 12:30:22.636  EPSV
< 2017-02-28 12:30:22.636  EPRT
< 2017-02-28 12:30:22.636 211 End
> 2017-02-28 12:30:22.636 CLNT WinSCP-release-5.9.4
< 2017-02-28 12:30:22.714 200 Don't care
> 2017-02-28 12:30:22.714 OPTS UTF8 ON
< 2017-02-28 12:30:22.792 202 UTF8 mode is always enabled. No need to send this command.
> 2017-02-28 12:30:22.792 PBSZ 0
< 2017-02-28 12:30:22.854 200 PBSZ=0
> 2017-02-28 12:30:22.854 PROT P
< 2017-02-28 12:30:22.933 200 Protection level set to P
. 2017-02-28 12:30:22.933 Session upkeep
. 2017-02-28 12:30:22.995 Connected
. 2017-02-28 12:30:22.995 Got reply 1 to the command 1
. 2017-02-28 12:30:22.995 --------------------------------------------------------------------------
. 2017-02-28 12:30:22.995 Using FTP protocol.
. 2017-02-28 12:30:22.995 Doing startup conversation with host.
> 2017-02-28 12:30:23.058 PWD
< 2017-02-28 12:30:23.136 257 "/" is current directory.
. 2017-02-28 12:30:23.136 Got reply 1 to the command 16
. 2017-02-28 12:30:23.136 Changing directory to "/".
> 2017-02-28 12:30:23.136 CWD /
< 2017-02-28 12:30:23.198 250 CWD successful. "/" is current directory.
. 2017-02-28 12:30:23.198 Got reply 1 to the command 16
. 2017-02-28 12:30:23.198 Getting current directory name.
> 2017-02-28 12:30:23.198 PWD
< 2017-02-28 12:30:23.276 257 "/" is current directory.
. 2017-02-28 12:30:23.276 Got reply 1 to the command 16
. 2017-02-28 12:30:23.433 Retrieving directory listing...
> 2017-02-28 12:30:23.433 TYPE A
< 2017-02-28 12:30:23.495 200 Type set to A
> 2017-02-28 12:30:23.495 PASV
< 2017-02-28 12:30:23.573 227 Entering Passive Mode (64,69,35,93,19,152)
> 2017-02-28 12:30:23.573 MLSD
. 2017-02-28 12:30:23.573 Connecting to 64.69.35.93:5016 ...
. 2017-02-28 12:30:23.636 Data connection opened
. 2017-02-28 12:30:23.636 Trying reuse main TLS session ID
. 2017-02-28 12:30:23.636 TLS layer changed state from none to connected
. 2017-02-28 12:30:23.636 TLS layer changed state from connected to aborted
. 2017-02-28 12:30:23.636 Data connection closed
. 2017-02-28 12:30:23.636 <Empty directory listing>
< 2017-02-28 12:30:23.714 150 Opening data channel for directory listing of "/"
< 2017-02-28 12:30:23.714 426 Connection closed; aborted transfer of "/"
. 2017-02-28 12:30:23.714 Could not retrieve directory listing
. 2017-02-28 12:30:23.714 Got reply 4 to the command 2
. 2017-02-28 12:30:23.714 Session upkeep
* 2017-02-28 12:30:23.808 (ECommand) Error listing directory '/'.
* 2017-02-28 12:30:23.808 Could not retrieve directory listing
* 2017-02-28 12:30:23.808 Connection closed; aborted transfer of "/"
. 2017-02-28 12:30:24.761 Startup conversation with host finished.
. 2017-02-28 12:30:24.761 Session upkeep
. 2017-02-28 12:30:24.917 Session upkeep
. 2017-02-28 12:30:25.401 Session upkeep
. 2017-02-28 12:30:25.901 Session upkeep
. 2017-02-28 12:30:26.401 Session upkeep
. 2017-02-28 12:30:26.901 Session upkeep
. 2017-02-28 12:30:27.401 Session upkeep
. 2017-02-28 12:30:27.901 Session upkeep
. 2017-02-28 12:30:28.401 Session upkeep
. 2017-02-28 12:30:28.901 Session upkeep
. 2017-02-28 12:30:29.401 Session upkeep
. 2017-02-28 12:30:29.901 Session upkeep
. 2017-02-28 12:30:30.401 Session upkeep
. 2017-02-28 12:30:30.901 Session upkeep
. 2017-02-28 12:30:31.401 Session upkeep
. 2017-02-28 12:30:31.901 Session upkeep
. 2017-02-28 12:30:32.401 Session upkeep
. 2017-02-28 12:30:32.901 Session upkeep
. 2017-02-28 12:30:33.401 Session upkeep
. 2017-02-28 12:30:33.901 Session upkeep
. 2017-02-28 12:30:34.401 Session upkeep
. 2017-02-28 12:30:34.901 Session upkeep
. 2017-02-28 12:30:35.401 Session upkeep
. 2017-02-28 12:30:35.901 Session upkeep
. 2017-02-28 12:30:36.401 Session upkeep
. 2017-02-28 12:30:36.901 Session upkeep
. 2017-02-28 12:30:37.401 Session upkeep
. 2017-02-28 12:30:37.901 Session upkeep
. 2017-02-28 12:30:38.401 Session upkeep
. 2017-02-28 12:30:38.901 Session upkeep
. 2017-02-28 12:30:39.401 Session upkeep
. 2017-02-28 12:30:39.901 Session upkeep
. 2017-02-28 12:30:40.401 Session upkeep
. 2017-02-28 12:30:40.901 Session upkeep
. 2017-02-28 12:30:41.401 Session upkeep
. 2017-02-28 12:30:41.901 Session upkeep
. 2017-02-28 12:30:42.401 Session upkeep
. 2017-02-28 12:30:42.901 Session upkeep

The following is server logs of the unsuccessful connection
(001118) 2/28/2017 9:29:54 AM - (not logged in) (xxx.xxx.xxx.17)> Connected on port 990, sending welcome message...
(001118) 2/28/2017 9:29:54 AM - (not logged in) (xxx.xxx.xxx.17)> SSL connection established
(001118) 2/28/2017 9:29:54 AM - (not logged in) (xxx.xxx.xxx.17)> USER ccopl
(001118) 2/28/2017 9:29:54 AM - (not logged in) (xxx.xxx.xxx.17)> 331 Password required for ccopl
(001118) 2/28/2017 9:29:54 AM - (not logged in) (xxx.xxx.xxx.17)> PASS **************
(001118) 2/28/2017 9:29:54 AM - ccopl (xxx.xxx.xxx.17)> 230 Logged on
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> SYST
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 215 UNIX emulated by FileZilla
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> FEAT
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 211-Features:
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  MDTM
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  REST STREAM
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  SIZE
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  MLST type*;size*;modify*;
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  MLSD
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  AUTH SSL
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  AUTH TLS
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  PROT
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  PBSZ
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  UTF8
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  CLNT
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  MFMT
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  EPSV
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)>  EPRT
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 211 End
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> CLNT WinSCP-release-5.9.4
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 200 Don't care
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> OPTS UTF8 ON
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 202 UTF8 mode is always enabled. No need to send this command.
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> PBSZ 0
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 200 PBSZ=0
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> PROT P
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 200 Protection level set to P
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> PWD
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 257 "/" is current directory.
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> CWD /
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 250 CWD successful. "/" is current directory.
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> PWD
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 257 "/" is current directory.
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> TYPE A
(001118) 2/28/2017 9:29:55 AM - ccopl (xxx.xxx.xxx.17)> 200 Type set to A
(001118) 2/28/2017 9:29:56 AM - ccopl (xxx.xxx.xxx.17)> PASV
(001118) 2/28/2017 9:29:56 AM - ccopl (xxx.xxx.xxx.17)> 227 Entering Passive Mode (64,69,35,93,19,152)
(001118) 2/28/2017 9:29:56 AM - ccopl (xxx.xxx.xxx.17)> MLSD
(001118) 2/28/2017 9:29:56 AM - ccopl (xxx.xxx.xxx.17)> 150 Opening data channel for directory listing of "/"
(001118) 2/28/2017 9:29:56 AM - ccopl (xxx.xxx.xxx.17)> 426 Connection closed; aborted transfer of "/"
(001118) 2/28/2017 9:33:56 AM - ccopl (xxx.xxx.xxx.17)> 421 Connection timed out.
(001118) 2/28/2017 9:33:56 AM - ccopl (xxx.xxx.xxx.17)> disconnected.

The following is my attempt to connect from my home office using WinSCP and the same credentials.

(001192)2/28/2017 15:06:02 PM - (not logged in) (xxx.xxx.xxx.241)> Connected on port 990, sending welcome message...
(001192)2/28/2017 15:06:02 PM - (not logged in) (xxx.xxx.xxx.241)> SSL connection established
(001192)2/28/2017 15:06:02 PM - (not logged in) (xxx.xxx.xxx.241)> USER ccopl
(001192)2/28/2017 15:06:02 PM - (not logged in) (xxx.xxx.xxx.241)> 331 Password required for ccopl
(001192)2/28/2017 15:06:02 PM - (not logged in) (xxx.xxx.xxx.241)> PASS **************
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 230 Logged on
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> SYST
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 215 UNIX emulated by FileZilla
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> FEAT
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 211-Features:
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  MDTM
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  REST STREAM
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  SIZE
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  MLST type*;size*;modify*;
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  MLSD
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  AUTH SSL
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  AUTH TLS
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  PROT
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  PBSZ
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  UTF8
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  CLNT
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  MFMT
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  EPSV
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)>  EPRT
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 211 End
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> CLNT WinSCP-release-5.9.4
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 200 Don't care
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> OPTS UTF8 ON
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 202 UTF8 mode is always enabled. No need to send this command.
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> PBSZ 0
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 200 PBSZ=0
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> PROT P
(001192)2/28/2017 15:06:02 PM - ccopl (xxx.xxx.xxx.241)> 200 Protection level set to P
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> PWD
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 257 "/" is current directory.
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> CWD /
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 250 CWD successful. "/" is current directory.
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> PWD
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 257 "/" is current directory.
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> TYPE A
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 200 Type set to A
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> PASV
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 227 Entering Passive Mode (64,69,35,93,19,175)
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> MLSD
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 150 Opening data channel for directory listing of "/"
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> SSL connection for data connection established
(001192)2/28/2017 15:06:03 PM - ccopl (xxx.xxx.xxx.241)> 226 Successfully transferred "/"

Many thanks for your time...

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martouf
Guest

problem caused by firewall? the opening connection for listing of "/" followed by connection closed versus the one session where the connection opens and the list is transferred is interesting.

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shoutbomb
Joined:
Posts:
2

Re: Error listing directory '/'.

martin wrote:

Is the client able to connect with any other FTPS client?

They tried Filezilla and it also failed. This prompted them to check their firewall again. They were able to view their directory once they made the appropriate changes to the firewall.

Issue closed. Many thanks.

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dcompton@cimatri.com
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Posts:
4

Firewall changes?

I know this is an older post but we are experiencing the same issue.

I have a vendor that is trying to use WinSCP to transfer files to us. As the OP mentioned, a firewall configuration was needed to get rid of the "Error listing directory "/"" message. We suspect this is a firewall issue at their data center because we are able to connect just fine from a local workstation. What firewall edit needs to be made to remove this error? BTW, they are able to connect just fine when using no encryption. This only occurs when using TLS/SSL explicit encryption.

TIA

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martin
Site Admin
martin avatar
Joined:
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41,276
Location:
Prague, Czechia

Re: Firewall changes?

dcompton@cimatri.com wrote:

I know this is an older post but we are experiencing the same issue.

I have a vendor that is trying to use WinSCP to transfer files to us. As the OP mentioned, a firewall configuration was needed to get rid of the "Error listing directory "/"" message. We suspect this is a firewall issue at their data center because we are able to connect just fine from a local workstation. What firewall edit needs to be made to remove this error? BTW, they are able to connect just fine when using no encryption. This only occurs when using TLS/SSL explicit encryption.
Your duplicate post:
https://winscp.net/forum/viewtopic.php?t=25651

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psbautista
Guest

error listing directory

It also happened to me, I am administering multiple web servers, and I'm confused one of those servers is unable to communicate with the winscp software "error directory listing" message occurs.
Solution:
1. Secure newer version of winscp softare. (Just simple different from the currently installed)
2. Uninstall the current winscp software.
3. Reinstall the new one!

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rvpsnashville
Guest

What worked for me - turn off explict TLS

I was having the same issue. When I turned off explict TLS/SLL it worked fine.

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