IBM Support

Host key negotiation issues when using an OpenSsh SFTP backend server

Troubleshooting


Problem

Following an upgrade to SSP v6.0.3.0, Fix 1+, Build 142, difficulties may arise with connections to a backend OpenSSH SFTP server.
The key in question is confirmed as valid, and has not changed.

Symptom

There observed error is "Connection error creating backend session: SSHException reason code:3 -- The host key signature is invalid"

Document Location

Worldwide

[{"Type":"MASTER","Line of Business":{"code":"LOB77","label":"Automation Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SS6PNW","label":"IBM Sterling Secure Proxy"},"ARM Category":[{"code":"a8m0z000000cwWLAAY","label":"ENGINE"}],"ARM Case Number":"TS008245467","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"}]

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Document Information

Modified date:
31 March 2022

UID

ibm16562399