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Mac OS ssh：连接被对等方重置

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Mac OS ssh：连接被对等方重置

为了使用 Hadoop，我编辑了主机文件并删除了一些行（这些行干扰了正确的操作）。运行时ssh localhost，遇到错误：

kex_exchange_identification: read: Connection reset by peer

配置：

  • hosts.allow： 
    sshd : ALL
ALL : ALL
  • hosts.deny： 
    sshd: ALL
  • hosts： 
    ##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1   localhost
255.255.255.255 broadcasthost
::1             localhost
  • ls -ld /etc /etc/ssh* /etc/ssh*/*： 
    lrwxr-xr-x@  1 root  wheel      11  1 янв  2020 /etc -> private/etc
drwxrwxr-x  13 root  wheel     416  2 окт 23:26 /etc/ssh
-rwxrwxr-x   1 root  wheel  577388  1 янв  2020 /etc/ssh/moduli
-rwxrwxr-x   1 root  wheel    1511  1 янв  2020 /etc/ssh/ssh_config
-rwxrwxr-x   1 root  wheel    1405 22 ноя 18:22 /etc/ssh/ssh_host_dsa_key
-rwxrwxr-x   1 root  wheel     620 22 ноя 18:22 /etc/ssh/ssh_host_dsa_key.pub
-rwxrwxr-x   1 root  wheel     525 22 ноя 18:23 /etc/ssh/ssh_host_ecdsa_key
-rwxrwxr-x   1 root  wheel     192 22 ноя 18:23 /etc/ssh/ssh_host_ecdsa_key.pub
-rwxrwxr-x   1 root  wheel     387  2 окт 23:26 /etc/ssh/ssh_host_ed25519_key
-rwxrwxr-x   1 root  wheel      82  2 окт 23:26 /etc/ssh/ssh_host_ed25519_key.pub
-rwxrwxr-x   1 root  wheel    2622 22 ноя 18:22 /etc/ssh/ssh_host_rsa_key
-rwxrwxr-x   1 root  wheel     584 22 ноя 18:22 /etc/ssh/ssh_host_rsa_key.pub
-rwxrwxr-x   1 root  wheel    3169  1 янв  2020 /etc/ssh/sshd_config

如何解决这个问题？我真的需要你的帮助！我很绝望 ：（

答案1

您已经破坏了（至少）中文件的权限/etc，这就是ssh不再工作的原因。以下是您在问题中列出的文件的正确设置：

lrwxr-xr-x@  1 root  wheel      11  1 Jan  2020 /etc -> private/etc
drwxr-xr-x  13 root  wheel     416 22 Nov 12:22 /etc/ssh
-rw-r--r--   1 root  wheel  577388  1 Jan  2020 /etc/ssh/moduli
-rw-r--r--   1 root  wheel    1511  1 Jan  2020 /etc/ssh/ssh_config
-rw-------   1 root  wheel     672 18 Jun  2018 /etc/ssh/ssh_host_dsa_key
-rw-r--r--   1 root  wheel     590 18 Jun  2018 /etc/ssh/ssh_host_dsa_key.pub
-rw-------   1 root  wheel     227 18 Jun  2018 /etc/ssh/ssh_host_ecdsa_key
-rw-r--r--   1 root  wheel     162 18 Jun  2018 /etc/ssh/ssh_host_ecdsa_key.pub
-rw-------   1 root  wheel     387 18 Jun  2018 /etc/ssh/ssh_host_ed25519_key
-rw-r--r--   1 root  wheel      82 18 Jun  2018 /etc/ssh/ssh_host_ed25519_key.pub
-rw-------   1 root  wheel    1679 18 Jun  2018 /etc/ssh/ssh_host_rsa_key
-rw-r--r--   1 root  wheel     382 18 Jun  2018 /etc/ssh/ssh_host_rsa_key.pub
-rw-r--r--   1 root  wheel    3169  1 Jan  2020 /etc/ssh/sshd_config

我怀疑您可能更改了比这些更多的权限。

不幸的是，我发现关于纠正系统文件权限的正确方法存在冲突且不清楚的文档，因此我建议您访问https://apple.stackexchange.com/并查看之前是否已在那里询问并回答了有关修复权限的问题。 （您不需要具体询问如何修复ssh- 一旦您修复了权限，问题就会得到解决。）

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