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08 Jun
How to use domain account authentication in our SFTP and FTP server
How to use domain account authentication in our SFTP and FTP server
In version v2025.6.8.0 we added the possibility to use domain users as authentication method.
Select Server menu item > SFTP Server
There are a couple of ways to use this new ‘Domain User’ option. The examples below are related to SFTP but the same counts for FTP(S).
1. First example:
Domain User is enabled
Username is set to “administrator”
You need to use the sAMAccountName
Domain Name is set to “limagito”
When a SFTP client connects to our SFTP server with the user “administrator” we will request the domain “limagito” to check if the provided password from the SFTP client is correct.
2. Second example:
Domain User is enabled
Username is set to “limagito\administrator”.
The Username is prefixed by the domain.
You need to use the sAMAccountName
Domain Name is left blanc
When a SFTP client connects to our SFTP server with the user “limagito\administrator” we will request the domain “limagito” to check if the provided password from the SFTP client is correct.
3. Third example:
Domain User is enabled
Username is set to “localhost\administrator”.
The Username is prefixed by the domain.
You need to use the sAMAccountName
Domain Name is left blanc
When a SFTP client connects to our SFTP server with the user “localhost\administrator” we will request the localhost user accounts to check if the provided password from the SFTP client is correct.
In this version we also added a LDAP(S) client option. In the first two account examples we used the “limagito” domain. Our domain LDAPS server is listening on IP 192.168.2.202 – Port 636.
Check ‘Enable LDAP Client(s)’
Add the Client(s) you need
You can add multiple domains
For each domain you add, you need to add:
LDAP Host, our LDAP test server is using the IP 192.168.2.202
LDAP Port, our LDAP test server is listening on Port 636
LDAP Use TLS
When enabled TLS will be used to encrypt the LDAP packets
If you need any help with this ‘domain account authentication’ option, please let us know.
Best Regards,
Limagito Team
#sftp #ldap #managedfiletransfer #filetransfer #filemanagement
By Limagito-Team FTP LDAP SFTP domain, LDAP
08 Sep
Failed to convert data connection to TLS
Failed to convert data connection
Q: What could be the reason of this?
When trying to FTP, This is the error message –
9/4/2024 3:36:11 PM FTPListDirectory, CK GetDirCount Error: ChilkatLog:
GetDirCount:
VerboseLogging: 0
listPattern: *
fetchDirListing:
pattern: *
supportsMLSD: 0
fetchDirListing2:
pbsz_protp:
simpleCommand:
sendCommand:
sendingCommand: PBSZ 0
–sendCommand
readCommandResponse:
replyLineQP: 200 OK.
–readCommandResponse
–simpleCommand
simpleCommand:
sendCommand:
sendingCommand: PROT P
–sendCommand
readCommandResponse:
replyLineQP: 200 Data connections set to secure (SSL) mode
–readCommandResponse
–simpleCommand
–pbsz_protp
setupDataConnection:
passive transfer mode
setupPassiveDataSocket:
sendCommand:
sendingCommand: PASV
–sendCommand
readCommandResponse:
replyLineQP: 227 Entering Passive Mode (XXX,XXX,XXX,XXX,XXX,XXX)
–readCommandResponse
dataConnect:
hostname: XXX.XXX.XXX.XXX
port: 49434
Setting SNI hostname for data connection.
SNI_hostname: XXXXXXXX
socketOptions:
SO_SNDBUF: 262144
SO_RCVBUF: 4194304
TCP_NODELAY: 0
SO_KEEPALIVE: 1
–socketOptions
dataConnectSuccess: 1
–dataConnect
–setupPassiveDataSocket
–setupDataConnection
sendCommand:
sendingCommand: LIST
–sendCommand
readCommandResponse:
replyLineQP: 125 Secure data connection open; transfer starting.
–readCommandResponse
convertDataConnToSsl:
ConvertToTls: Elapsed time: 0 millisec
Failed to convert data connection to TLS
–convertDataConnToSsl
Failed to convert data connection to TLS.
–fetchDirListing2
–fetchDirListing
Failed to get and cache directory listing…
N: -1
Failed.
–GetDirCount
–ChilkatLog
Could you please help in this?
A: The error indicates that while the initial control connection to the FTP server was established successfully, the client failed to upgrade the data connection to a secure TLS (Transport Layer Security) connection.
Possible causes:
Misconfiguration on the server or client side
Incompatible TLS versions between client and server
Firewall or network issues blocking the necessary ports
Outdated software that doesn’t support the required encryption methods
Common scenarios:
The FTP client is set to use explicit FTPS, but the server doesn’t support it
The server requires implicit FTPS, but the client is not configured for it
There’s a mismatch in the supported TLS versions between client and server
To resolve this issue, you could try the following:
Check your FTP client settings to ensure you’re using the correct encryption method (implicit or explicit FTPS).
Verify with your FTP server administrator that FTPS is supported and properly configured.
Try using a different FTP client to rule out client-specific issues.
Ensure your firewall isn’t blocking the necessary ports for FTPS (usually port 990 for implicit FTPS).
Update your FTP client and server software to the latest versions.
The The reason here was a mismatch in the supported TLS versions between client and server. Somehow the server has an issue with TLS and the only way to transfer the data was to disable our ‘Encrypt Data Channel” option.
$C:\Data\Foto\v2023\FTP\Failed to convert data connection\Failed to convert data connection$
The customer was using Implicit FTPS on port 990
If you need any help with this question, please let us know.
Best Regards,
Limagito Team
#ftp #managedfiletransfer #filetransfer #filemanagement
By Limagito-Team FTP failed to convert data, TLS
03 Sep
Can’t open data connection for ftp transfer
Can’t open data connection for ftp transfer
Q: I’m using the attached FTP source that I have set to get files, but I’m getting an error when reading the directory. I’m able to access the folder using Cyberduck fine with the same settings. Below is the log showing the response I get.  I’m using v2024.2.24.0. Please let me know if you need anything else to troubleshoot.
A: It looked like the system was not able to open a data connection to the FTP server (425 Can’t open data connection for transfer) and we asked the user to switch be to ‘Active’ mode. FTP is using two channels, a command and a data channel. So if you are able to connect, then you know at least the command channel is working. If you are not able to receive directory listings, then you know something is wrong with the data channel. The data channel can be used in active and passive mode (passive mode = default).
Reply user: “That seemed to work. Thank you.”
Connecting to ftp_useast.xxxxxxxx.com:22
Connection successful
Server System: 220-Xxxxx Secure FTP
220 **Authorized Access Only**
Request Path: /PAX_Test_Xpance
Response Path: /PAX_Test_Xpance
List Directory: /PAX_Test_Xpance/
List Directory /PAX_Test_Xpance/ Error
Disconnected from ftp_useast.xxxxxxxx.com:22
8/20/2024 4:14:07 PM FTPSCheckConnected, CK Login Reply: 220-Xxxxxx Secure FTP
220 **Authorized Access Only**
8/20/2024 4:14:07 PM FTPSCheckConnected, CK Request Path after Login: /
8/20/2024 4:14:07 PM FTPSCheckConnected, CK Change Path to /PAX_Test_Xpance
8/20/2024 4:14:07 PM FTPSCheckConnected, CK Request Path after Change: /PAX_Test_Xpance/
8/20/2024 4:14:17 PM FTPListDirectory, CK GetDirCount Error: ChilkatLog:
GetDirCount:
DllDate: Jan 27 2024
ChilkatVersion: 9.5.0.97
UnlockPrefix: CPSFBE
UnlockStatus: 2
Architecture: Little Endian; 64-bit
Language: Delphi DLL
VerboseLogging: 0
listPattern: *
fetchDirListing:
pattern: *
supportsMLSD: 1
fetchDirListing2:
setupDataConnection:
active transfer mode
setupActiveDataSocket:
Created data listen socket
Using ephemeral port range for Active data connection.
dataPort: 51222
portIpAddress: 192.168.xxx.xxx
MyIPv4: 192,168,xxx,xxx,200,22
sendCommand:
sendingCommand: PORT 192,168,xxx,xxx,200,22
–sendCommand
readCommandResponse:
replyLineQP: 200 Port command successful
–readCommandResponse
–setupActiveDataSocket
–setupDataConnection
sendCommand:
sendingCommand: MLSD
–sendCommand
completeDataConnection:
acceptDataConnection:
controlChannelReply:
Reading intermediate response..
readCommandResponse:
replyLineQP: 150 Opening data channel for directory listing of “/PAX_Test_Xpance”
              –readCommandResponse
–controlChannelReply
controlChannelReply:
Reading final response..
readCommandResponse:
replyLineQP: 425 Can’t open data connection for transfer of “/PAX_Test_Xpance”
              –readCommandResponse
Final response indicates error.
–controlChannelReply
–acceptDataConnection
Failed to accept data connection.
–completeDataConnection
Failed to complete the data connection.
–fetchDirListing2
–fetchDirListing
Failed to get and cache directory listing…
N: -1
Failed.
–GetDirCount
If you need any help with this ‘data connection for ftp transfer’ question, please let us know.
Best Regards,
Limagito Team
#ftp #managedfiletransfer #filetransfer #filemanagement

By Limagito-Team FTP data connection, ftp transfer

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