I encountered "Bad packet length" and "ssh_dispatch_run_fatal" when I tried to SSH to VM

lxl 0 Reputation points
2023-05-12T11:22:47.2066667+00:00

terminal

~ % ssh x@x.x.x.x

Bad packet length 1349676916.

ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: message authentication code incorrect

~ %

thank you for taking a look at my question

Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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  1. deherman-MSFT 34,691 Reputation points Microsoft Employee
    2023-05-12T18:53:18.84+00:00

    @lxl

    This issue could be caused by various factors, such as network problems, incorrect configuration, or incompatible software versions.

    Here are some suggestions to troubleshoot the issue:

    1. Check your network connection: Ensure that you have a stable network connection and that there are no firewalls or security groups blocking the SSH traffic on port 22.
    2. Verify the SSH server configuration: Make sure the SSH server is properly configured and running on the target machine. You can check the sshd_config file for any misconfigurations.
    3. Update your SSH client and server: Ensure that both your SSH client and server are up-to-date. Incompatible software versions might cause connection issues.
    4. Try a different SSH client: If the issue persists, try using a different SSH client to see if the problem is specific to the client you're currently using.
    5. Check server logs: Review the logs on the SSH server for any error messages or additional information that might help diagnose the issue. The logs are typically located in auth.log or secure logs on Linux systems.

    If the issue persists after trying these suggestions, please provide more information about your setup, such as the operating systems and SSH software versions involved, so I can further assist you.

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