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https://issues.apache.org/jira/browse/GUACAMOLE-1497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17477444#comment-17477444
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Matt Baran commented on GUACAMOLE-1497:
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I am using the offical Docker container for guacd. Do I need to open a new Jira
issue to ask that the libssh2 be update to 1.10.0? Right now I see that it's
1.8.0-2.1
> Guacamole 1.4.0 ssh client seems to have host key sig compatibility issues
> with my ssh server
> ---------------------------------------------------------------------------------------------
>
> Key: GUACAMOLE-1497
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1497
> Project: Guacamole
> Issue Type: Bug
> Components: SSH
> Affects Versions: 1.4.0
> Reporter: Colin Gordon
> Priority: Major
> Attachments: pcap.pcap
>
>
> Gaucamole fails to establish a connection to my piKVM via SSH.
> Guacd reports "SSH handshake failed" in the logs.
> I took a pcap and noticed that the guacamole client seems to only support two
> server host key algorithms: ssh-rsa and ssh-dss. The ssh server doesn't
> support either of those two. I infer that this is the cause of the ssh
> handshake failure.
> From googling around, openssh no longer supports ssh-rsa so it seems like a
> deprecation issue. My suggested fix would be for the guac ssh client to
> support additional server host key algorithms.
> PCAP attached. The client (guac) is 100.76.173.55 and the server is
> 100.97.86.50.
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