Unable to Verify SSH Details

Last updated on Aug 16, 2023
Applies To Sources and Destinations connecting through SSH with Hevo’s RSA-generated public key.
Error Message Text(s) Unable to verify SSH details.

Error Summary

  • Hevo is not able to verify the credentials for connecting to the SSH server.

Potential Causes

  • The SSH server is hosted on a system with a newer operating system (OS) version, such as Ubuntu 22 or Amazon Linux 2023 (AL2023). On these systems, support for RSA-generated keys may not be enabled by default. The authorization log file /var/log/auth.log on your SSH server may display the following error when you try to connect: _userauth_pubkey: key type ssh-rsa not in PubkeyAcceptedAlgorithms.

Suggested Action(s)

  • Use the Hevo ECDSA public key. For this, add the ECSDA key to the authorized_keys file on your SSH server host.

  • Enable support for RSA-generated public keys on your SSH server host. To do this:

    • On Debian Architecture-based Systems such as Ubuntu 22.04 LTS:

      1. Log in to your SSH server host.

      2. Access the SSH configuration file, sshd_config. This file is generally found in the /etc/ssh directory. Add the following lines to it:

        HostKeyAlgorithms +ssh-rsa
        PubkeyAcceptedKeyTypes +ssh-rsa
      3. Restart your SSH server using the following command:

        sudo systemctl restart sshd
    • On Red Hat Enterprise Linux-based systems such as Amazon Linux 2023 and CentOS 9:

      1. Log in to the AWS EC2 console and connect to your SSH server instance.

      2. In the terminal window, run the following commands:

        sudo dnf install crypto-policies-scripts 
        sudo update-crypto-policies --set LEGACY
      3. From the EC2 console, reboot your SSH server instance.

Revision History

Refer to the following table for the list of key updates made to this page:

Date Release Description of Change
Aug-16-2023 NA New document.

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