Connecting to 10.0.0.200:22... Could not connect to '10.0.0.200' (port 22): Connection failed.

今天遇到一个关于XShell连接虚拟机中的centos系统的奇葩问题，在连接的时候报错如下： Connecting to 10.0.0.200:22... Could not connect to '10.0.0.200' (port 22): Connection failed.  Type `help' to learn how to use Xshell prompt. 一开始以为是系统的问

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