SFTP

[zeus1976]

Hello Togehter

Since serveral days I have the follow error code, when I connect to my SFTP Server. Before it was working without problems.

My SFTP Server is a Synology NAS DS710+. I have tried to install the new version from Bestsync Ver9.0.6.2. Same Problem.

The error code is:
--BestSyncLog
Unable to connect to SFTP server.
Connect_SFtp:
hostname: 192.168.169.20
port: 22
ConnectTimeoutMs_1: 180000
calling ConnectSocket2
IPV6 enabled connect with NO heartbeat.
This is an IPV4 numeric address...
AddrInfoList:
AddrInfo:
ai_flags: 4
ai_family: 2
ai_socktype: 1
ai_protocol: 0
ai_addrlen: 16
ai_canonname: (NULL)
--AddrInfo
--AddrInfoList
Connect using IPV4.
ipAddress1: 192.168.169.20
myIP_3: 192.168.169.2
myPort_3: 50155
connect successful (2)
Established TCP/IP connection with SSH server
Turning on TCP_NODELAY.
clientIdentifier: SSH-2.0-PuTTY_Local:_May_11_2009_17:22:38
Sending client identifier...
Done sending client identifier.
Reading server version...
initialDataFromSshServer: SSH-2.0-OpenSSH_6.6p2-hpn14v4
serverVersion: SSH-2.0-OpenSSH_6.6p2-hpn14v4
KeyExchangeAlgs:
algorithm: curve25519-sha256@libssh.org
algorithm: ecdh-sha2-nistp256
algorithm: ecdh-sha2-nistp384
algorithm: ecdh-sha2-nistp521
algorithm: diffie-hellman-group-exchange-sha256
algorithm: diffie-hellman-group14-sha1
--KeyExchangeAlgs
HostKeyAlgs:
algorithm: ssh-rsa
algorithm: ssh-dss
algorithm: ecdsa-sha2-nistp256
--HostKeyAlgs
EncCS:
algorithm: aes128-ctr
algorithm: aes192-ctr
algorithm: aes256-ctr
algorithm: aes128-gcm@openssh.com
algorithm: aes256-gcm@openssh.com
algorithm: chacha20-poly1305@openssh.com
--EncCS
EncSC:
algorithm: aes128-ctr
algorithm: aes192-ctr
algorithm: aes256-ctr
algorithm: aes128-gcm@openssh.com
algorithm: aes256-gcm@openssh.com
algorithm: chacha20-poly1305@openssh.com
--EncSC
MacCS:
algorithm: umac-64-etm@openssh.com
algorithm: umac-128-etm@openssh.com
algorithm: hmac-sha2-256-etm@openssh.com
algorithm: hmac-sha2-512-etm@openssh.com
algorithm: hmac-sha1-etm@openssh.com
algorithm: umac-64@openssh.com
algorithm: umac-128@openssh.com
algorithm: hmac-sha2-256
algorithm: hmac-sha2-512
algorithm: hmac-sha1
--MacCS
MacSC:
algorithm: umac-64-etm@openssh.com
algorithm: umac-128-etm@openssh.com
algorithm: hmac-sha2-256-etm@openssh.com
algorithm: hmac-sha2-512-etm@openssh.com
algorithm: hmac-sha1-etm@openssh.com
algorithm: umac-64@openssh.com
algorithm: umac-128@openssh.com
algorithm: hmac-sha2-256
algorithm: hmac-sha2-512
algorithm: hmac-sha1
--MacSC
CompCS:
algorithm: none
algorithm: zlib@openssh.com
--CompCS
CompSC:
algorithm: none
algorithm: zlib@openssh.com
--CompSC
Unable to agree upon server-to-client encryption algorithm.
Unable to agree upon client-to-server encryption algorithm.
MAC: HMAC-SHA1
MAC: HMAC-SHA1
Compression: none
Compression: none
Key Exchange: DH Group Exchange SHA256
Host Key Algorithm: DSS
numBits: 128
pbits: 1024
Using GEX Group.
Sending KEX_DH_GEX_REQUEST...
pbits: 1024
numBytesRequested: 8
Connection closed by connected peer.
Failed to read data on SSH connection.
Failed to read KEX_DH_GEX_REQUEST response
Failed.
--Connect_SFtp
--ChilkatLog
Unable to connect to SFTP server.
Connect_SFtp:
hostname: 192.168.169.20
port: 22
ConnectTimeoutMs_1: 180000
calling ConnectSocket2
IPV6 enabled connect with NO heartbeat.
This is an IPV4 numeric address...
AddrInfoList:
AddrInfo:
ai_flags: 4
ai_family: 2
ai_socktype: 1
ai_protocol: 0
ai_addrlen: 16
ai_canonname: (NULL)
--AddrInfo
--AddrInfoList
Connect using IPV4.
ipAddress1: 192.168.169.20
myIP_3: 192.168.169.2
myPort_3: 50156
connect successful (2)
Established TCP/IP connection with SSH server
Turning on TCP_NODELAY.
clientIdentifier: SSH-2.0-PuTTY_Local:_May_11_2009_17:22:38
Sending client identifier...
Done sending client identifier.
Reading server version...
initialDataFromSshServer: SSH-2.0-OpenSSH_6.6p2-hpn14v4
serverVersion: SSH-2.0-OpenSSH_6.6p2-hpn14v4
KeyExchangeAlgs:
algorithm: curve25519-sha256@libssh.org
algorithm: ecdh-sha2-nistp256
algorithm: ecdh-sha2-nistp384
algorithm: ecdh-sha2-nistp521
algorithm: diffie-hellman-group-exchange-sha256
algorithm: diffie-hellman-group14-sha1
--KeyExchangeAlgs
HostKeyAlgs:
algorithm: ssh-rsa
algorithm: ssh-dss
algorithm: ecdsa-sha2-nistp256
--HostKeyAlgs
EncCS:
algorithm: aes128-ctr
algorithm: aes192-ctr
algorithm: aes256-ctr
algorithm: aes128-gcm@openssh.com
algorithm: aes256-gcm@openssh.com
algorithm: chacha20-poly1305@openssh.com
--EncCS
EncSC:
algorithm: aes128-ctr
algorithm: aes192-ctr
algorithm: aes256-ctr
algorithm: aes128-gcm@openssh.com
algorithm: aes256-gcm@openssh.com
algorithm: chacha20-poly1305@openssh.com
--EncSC
MacCS:
algorithm: umac-64-etm@openssh.com
algorithm: umac-128-etm@openssh.com
algorithm: hmac-sha2-256-etm@openssh.com
algorithm: hmac-sha2-512-etm@openssh.com
algorithm: hmac-sha1-etm@openssh.com
algorithm: umac-64@openssh.com
algorithm: umac-128@openssh.com
algorithm: hmac-sha2-256
algorithm: hmac-sha2-512
algorithm: hmac-sha1
--MacCS
MacSC:
algorithm: umac-64-etm@openssh.com
algorithm: umac-128-etm@openssh.com
algorithm: hmac-sha2-256-etm@openssh.com
algorithm: hmac-sha2-512-etm@openssh.com
algorithm: hmac-sha1-etm@openssh.com
algorithm: umac-64@openssh.com
algorithm: umac-128@openssh.com
algorithm: hmac-sha2-256
algorithm: hmac-sha2-512
algorithm: hmac-sha1
--MacSC
CompCS:
algorithm: none
algorithm: zlib@openssh.com
--CompCS
CompSC:
algorithm: none
algorithm: zlib@openssh.com
--CompSC
Unable to agree upon server-to-client encryption algorithm.
Unable to agree upon client-to-server encryption algorithm.
MAC: HMAC-SHA1
MAC: HMAC-SHA1
Compression: none
Compression: none
Key Exchange: DH Group Exchange SHA256
Host Key Algorithm: DSS
numBits: 128
pbits: 1024
Using GEX Group.
Sending KEX_DH_GEX_REQUEST...
pbits: 1024
numBytesRequested: 8
Connection closed by connected peer.
Failed to read data on SSH connection.
Failed to read KEX_DH_GEX_REQUEST response
Failed.
--Connect_SFtp
--ChilkatLog
Unable to connect to SFTP server.

Do you know this problem? Best regards

[RiseFly]

Please try the new BestSync 2015 (beta) to see if the problem can be resolved.

[zeus1976]

Thank you for your answer. I have now installed the new version from BestSync 2015.

Now is working but I get another error message when I'm synchronizing. The error message is:
Fehler: Ungültiger verschlüsselter Datei Header

What does it mean this message? Why I get this message?

Thank you for your help.

Best regards

[RiseFly]

"Fehler: Ungültiger verschlüsselter Datei Header" means that you have not set the encryption direction correctly.
The task is trying to decrypt files of a non-crypted folder.

[zeus1976]

RiseFly wrote:
> "Fehler: Ungültiger verschlüsselter Datei Header" means that you
> have not set the encryption direction correctly.
> The task is trying to decrypt files of a non-crypted folder.

That is strange because I encrypt the file from site A to site B (per SMB-protocoll). Now I have only change the Transfermode from SMB to SFTP and since I changed I get this error message: "Ungültiger verschlüsselter Datei Header".

The encryption was not changed. So why should the file be decypted?

Thank you for your answer

[RiseFly]

Sorry to reply you late.
Is it possible that you copied normal files to the encryted side by accident?

[RiseFly]

We have used a new version of SFTP library, and the released version is BestSync 2015 (ver 10.0.2.0). Please try the new version to see if the problem can be resolved.