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Question:

SFTP connection issue

Jan 28 '16 at 11:19

Customer updated Server and now unable to connect to server. Here is the error log:

ChilkatLog: Connect: DllDate: Sep 3 2009 UnlockPrefix: JAKEAASSH Username: jakea Component: ActiveX SftpVersion: 0 hostname: sag-feed.mostwantedweb.net port: 22 Established TCP/IP connection with SSH server clientIdentifier: SSH-2.0-ChilkatSSH_2.0.0 FromServer: SSH-2.0-OpenSSH_7.1

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
HostKeyAlgs:
  algorithm: ssh-rsa
  algorithm: ecdsa-sha2-nistp256
  algorithm: ssh-ed25519
EncCS:
  algorithm: chacha20-poly1305@openssh.com
  algorithm: aes128-ctr
  algorithm: aes192-ctr
  algorithm: aes256-ctr
  algorithm: aes128-gcm@openssh.com
  algorithm: aes256-gcm@openssh.com
EncSC:
  algorithm: chacha20-poly1305@openssh.com
  algorithm: aes128-ctr
  algorithm: aes192-ctr
  algorithm: aes256-ctr
  algorithm: aes128-gcm@openssh.com
  algorithm: aes256-gcm@openssh.com
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
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
CompCS:
  algorithm: none
  algorithm: zlib@openssh.com
CompSC:
  algorithm: none
  algorithm: zlib@openssh.com
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: RSA
numBits: 128
pbits: 1024
Using GEX Group.
Sending KEX_DH_GEX_REQUEST...
numBytesRequested: 8
Connection closed by server.
Failed to read data on SSH connection.
Failed to read KEX_DH_GEX_REQUEST response
Failed.

Any suggestions on how to resolve this issue will be very appreciated!

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Answer

[b]ChilkatLog: Connect: DllDate: Sep 3 2009[/b]

Upgrade to the latest chilkat release, this one is more than 6 years old.

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Answer

Thanks Gert. I emailed support to see about how to go about upgrading our Chilkat components. We have not updated them since we purchased them.

I just hope that resolves the problem!!!

Thank you.

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Answer

My understanding is just download new version and use your old key.. Product license is perpetual, support contract has end date.

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Answer

The product license is perpetual, and grandfathered license holders can update to new versions perpetually because that was the deal at the time. However, a year or two ago (I can't remember exactly when), the licensing change so that only 1 year of new version upgrades is included.

Given the date in the LastErrorText ("DllDate: Sep 3 2009") the 1YR support has surely expired..