does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!

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原文链接：http://www.cnblogs.com/seawwh/archive/2011/11/01/2231184.html

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#运维

本文详细解释了在使用SSH时遇到的关于DNS服务器将192.168.x.x地址反向解析为localhost的问题，并提供了解决方案：编辑/etc/hosts文件将出问题的IP地址和主机名加入其中，从而避免错误提示。

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用ssh 时，会有这样的提示

$ ssh 192.168.1.156
Address 192.168.1.156 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!

是因为DNS服务器把 192.168.x.x 的地址都反向解析成 localhost ，而DNS服务器不是自己的，不能改。解决的办法就是，编辑 ssh 客户端的 /etc/hosts 文件，把出问题的IP 地址和主机名加进去，就不会报这样的错了。

转载于:https://www.cnblogs.com/seawwh/archive/2011/11/01/2231184.html

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