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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (SSHD-930) Send the client version string after receiving the version string of the server
Date Thu, 18 Jul 2019 11:24:00 GMT

     [ https://issues.apache.org/jira/browse/SSHD-930?focusedWorklogId=278902&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-278902
]

ASF GitHub Bot logged work on SSHD-930:
---------------------------------------

                Author: ASF GitHub Bot
            Created on: 18/Jul/19 11:23
            Start Date: 18/Jul/19 11:23
    Worklog Time Spent: 10m 
      Work Description: lgoldstein commented on pull request #105: SSHD-930 Send the client
version string after receiving the version string of the server
URL: https://github.com/apache/mina-sshd/pull/105
 
 
   
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 278902)
    Time Spent: 1h 10m  (was: 1h)

> Send the client version string after receiving the version string of the server
> -------------------------------------------------------------------------------
>
>                 Key: SSHD-930
>                 URL: https://issues.apache.org/jira/browse/SSHD-930
>             Project: MINA SSHD
>          Issue Type: Improvement
>    Affects Versions: 2.2.0
>            Reporter: Zhenliang Su
>            Assignee: Goldstein Lyor
>            Priority: Major
>             Fix For: 2.3.1
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> The rfc4253 does not indicate whether the ssh client must send its own version number
right after receiving the version number of the server.
> I have encountered a situation where mina-sshd is used to connect to cisco's sshd service,
sometimes it can be connected, sometimes not connected.
> Some rules are found by capturing packets. If the client sends its own version number
after receiving the version number of the server, it can be connected. If the client sends
its own version number before receiving the version number of the server, then it will not
be connected.
> I think, a better way is to change the SshClient code to send the version number of the
client right after receiving the version number of the server.



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