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Outbound SFTP connections to Tumbleweed SecureTransport (TST) server fail and SSH HMAC check fails

Karla Marsh
EFT Express (SMB) & Enterprise

THE INFORMATION IN THIS ARTICLE APPLIES TO:

  • EFT Server, all versions

SYMPTOM

Outbound SFTP connections to Tumbleweed SecureTransport (TST) server fail and SSH HMAC check fails

RESOLUTION

This is a known issue in SecureTransport v4.9.1 SP1, with the MACs hmac-MD5-96 and hmac-sha1-96. The resolution is to disable hmac-MD5-96 and hmac-sha1-96 in the registry for EFT Server outbound SFTP connections.

To disable the MACs in the registry

Edit the following registry settings:

HKLM\SOFTWARE\GlobalSCAPE\TED 6\Settings\SecuritySFTP2\

Set the following DWORD values to ‘0’ (Zero):

SFTP2_MD5-96

SFTP2_SHA1-96

MORE INFORMATION

Other Tumbleweed SecureTransport-related articles:

SecureTransport and EFT Server SSL: https://kb.globalscape.com/KnowledgebaseArticle10181.aspx

Details
Last Modified: 7 Years Ago
Last Modified By: GlobalSCAPE 5
Type: ERRMSG
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