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  • ssh问题:ssh_exchange_identification: Connection closed by remote host

    ssh问题:ssh_exchange_identification: Connection closed by remote host...

    刚刚一个朋友告诉我SSH连接不上服务器了,重启电脑也不管用.我仔细看了一下,老报如下错误:

    ssh_exchange_identification: Connection closed by remote host

    the connection to the remote host was lost . this usually means that you network connection went down or that the remote host was rebooted most network outages are short. and thus trying again may work

    (1)  最简单的解决方法就是让/etc/hosts.allow/etc/hosts.deny里面的所有信息都不生效,全部注销掉,重启SSH服务就可以了.

    但是,有时候在你修改后不久,仍然会出现/etc/hosts.deny自动修改,让你还是登录不了,此时需要检查denyhosts服务。

     在redhat系列的版本中,有一个denyhosts服务,会自动覆盖/etc/hosts.deny文件,在确认要登录的机器没有问题时,可以简单做如下处理:

    /etc/init.d/denyhosts stop

    vim /etc/hosts.allow文件,加入 sshd:ALL。

    (2)  但是还有一种情况,就是客户端连接数过多时,也会报这个错误。缺省情况下,SSH终端连接数最大为10个。在这种情况下,需要改SSH的配置文件,

          解决方案:

    1)        修改/etc/ssh/sshd_config中#MaxStartups 10,将其改为MaxStartups 1000

    2)        重启SSH服务,/etc/init.d/ssh restart

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  • 原文地址:https://www.cnblogs.com/gaobo543013306/p/9382867.html
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