事情是这样的：
平时都是通过 ssh 连接的
前两天搬瓦工的 VPS 突然就连接不上了，重启重装都不起作用，问过朋友也是这样的情况
今天刚买了 vultr，还是连接不上，彻底晕了，我的钱就这么浪费了吗？虽然不多也心疼啊
xshell 报错如下：
Connecting to 45.76.*.*:22...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
Socket error Event: 32 Error: 10053.
Connection closing...Socket close.
Connection closed by foreign host.
Disconnected from remote host(vultr) at 12:09:49.
Type `help' to learn how to use Xshell prompt.
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