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https://issues.apache.org/jira/browse/GUACAMOLE-1061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17115409#comment-17115409
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Nick Couchman commented on GUACAMOLE-1061:
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[~lmh-ly]: Can you provide the SSH server configuration, and any log files from
the SSH server? We need to determine why the handshake is failing, and these
messages are not very helpful.
> openssh8.2 caused the problem
> -----------------------------
>
> Key: GUACAMOLE-1061
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1061
> Project: Guacamole
> Issue Type: Bug
> Affects Versions: 1.0.0, 1.1.0
> Reporter: LY
> Priority: Major
>
> After upgrading openssh8.2 to guacd, the SSH service cannot connect to the
> target, error:"SSH handshark failed".
> guacd[28524]: INFO: Guacamole proxy daemon (guacd) version 1.0.0 started
> guacd[28524]: INFO: Guacamole proxy daemon (guacd) version 1.0.0 started
> guacd[28524]: DEBUG: Successfully bound socket to host 0.0.0.0, port 12026
> guacd[28524]: INFO: Listening on host 0.0.0.0, port 12026
> guacd[28524]: INFO: Creating new client for protocol "ssh"
> guacd[28524]: INFO: Connection ID is "$45f7c834-b0c1-4a78-84da-b43e12181dd5"
> guacd[29664]: DEBUG: Parameter "font-name" omitted. Using default value of
> "monospace".
> guacd[29664]: DEBUG: Parameter "font-size" omitted. Using default value of 12.
> guacd[29664]: DEBUG: Parameter "color-scheme" omitted. Using default value of
> "".
> guacd[29664]: DEBUG: Parameter "enable-sftp" omitted. Using default value of
> 0.
> guacd[29664]: DEBUG: Parameter "sftp-root-directory" omitted. Using default
> value of "/".
> guacd[29664]: DEBUG: Parameter "read-only" omitted. Using default value of 0.
> guacd[29664]: DEBUG: Parameter "recording-name" omitted. Using default value
> of "recording".
> guacd[29664]: DEBUG: Parameter "recording-exclude-output" omitted. Using
> default value of 0.
> guacd[29664]: DEBUG: Parameter "recording-exclude-mouse" omitted. Using
> default value of 0.
> guacd[29664]: DEBUG: Parameter "recording-include-keys" omitted. Using
> default value of 0.
> guacd[29664]: DEBUG: Parameter "create-recording-path" omitted. Using default
> value of 0.
> guacd[29664]: DEBUG: Parameter "server-alive-interval" omitted. Using default
> value of 0.
> guacd[29664]: DEBUG: Parameter "backspace" omitted. Using default value of
> 127.
> guacd[29664]: DEBUG: Parameter "terminal-type" omitted. Using default value
> of "linux".
> guacd[29664]: DEBUG: Parameter "lines" omitted. Using default value of 0.
> guacd[29664]: DEBUG: Parameter "columns" omitted. Using default value of 0.
> guacd[29664]: INFO: User "@c2227d18-8263-48c2-ae72-cad41df2f7aa" joined
> connection "$45f7c834-b0c1-4a78-84da-b43e12181dd5" (1 users now present)
> guacd[29664]: INFO: Typescript of terminal session will be saved to
> "/var/log/simp_fort/session/20/05/06/f92f8a01-a83e-4378-9282-a565af5a8eab//f92f8a01-a83e-4378-9282-a565af5a8eab".
> Timing file is
> "/var/log/simp_fort/session/20/05/06/f92f8a01-a83e-4378-9282-a565af5a8eab//f92f8a01-a83e-4378-9282-a565af5a8eab.timing".
> guacd[29664]: DEBUG: Successfully connected to host 172.16.13.243, port 22
> guacd[29664]: ERROR: SSH handshake failed.
> guacd[29664]: INFO: User "@c2227d18-8263-48c2-ae72-cad41df2f7aa" disconnected
> (0 users remain)
> guacd[29664]: INFO: Last user of connection
> "$45f7c834-b0c1-4a78-84da-b43e12181dd5" disconnected
> guacd[29664]: DEBUG: Requesting termination of client...
> guacd[29664]: DEBUG: Client terminated successfully.
> guacd[28524]: INFO: Connection "$45f7c834-b0c1-4a78-84da-b43e12181dd5"
> removed.
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