请问设置的自定义SSH端口 昨晚可以连 今天就连不上了 。

之前也出现过这个问题。
Host 'www.walkinrain.com' resolved to ****.
Connecting to ****:1999...
Connection established.
To escape to local shell, press 'Ctrl+Alt+]'.
Connection closing...Socket close.
Connection closed by foreign host.
Disconnected from remote host(新建会话 (4)) at 15:44:52.
Type `help' to learn how to use Xshell prompt.