
Getting Bad-Gateway error with an internal authentication error when we are trying to connect to a SFTP server using SFTP-SSH connector.
It is not accepting user password and private key passphrase. Connects well without user password and private key passphrase.
Make sure you are using supported private key format. Connect to SFTP server with SSH - Azure Logic Apps | Microsoft Docs
Since it uses SSH.Net library under the hood, the same limitations and strength should apply for both: sshnet/SSH.NET: SSH.NET is a Secure Shell (SSH) library for .NET, optimized for parallelism. (github.com)
Documentation for reference: SFTP - SSH - Connectors | Microsoft Docs
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