如果需要在您的工作站和远程主机之间上传或下载数据，会发生什么？
What happens if you need to upload or download data between your workstation and the remote host?
如果没有出现入站通信流，可能是主机没有响应，或者在您的主机和目标主机之间没有有效的路由。
If no inbound traffic appears, it may be that the host isn't responding or there's no valid route from your host to the target or vice versa.
就这一点来说，Linux更像是主机而不是简单的服务器或工作站。
In this instance, Linux provides capabilities more like a mainframe than a simple server or workstation.
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