ssh无法连接，其他工具正常，其他服务器也正常

ssh无法连接，其他工具正常连接登录，其他服务器也能正常连接登录，就这台服务器不行，验证里去掉sftp也不行

错误信息：
Socket error: disconnected
会话已断开连接，按回车重新连接。

具体如图：

Start by reproducing the SSH connection to the affected server and comparing it with the working tools and other servers, using the reported “Socket error: disconnected” message as the initial symptom. Done means identifying a reproducible WindTerm-side cause or obtaining the missing connection details needed for a targeted fix.

Written by the indexing model from the issue text.