To verify connectivity to the mainframe, run this command: telnet <mainframe's IP address>.

要检验到主机的连接，请运行以下命令： telnet <mainframe's IP address>。

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If you use Telnet to connect to the server by name rather than IP address, pay special attention to the IP address returned.

如果您使用telnet连接到服务器名称，而非ip地址，要特别注意返回的IP地址。

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The example sends a message to the client IP 192.168.9.14, if the client tries to connect using Telnet or SSH.

如果IP为192.168.9.14的客户端试图用telnet或ssh连接，那么该示例会发送消息给它。

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