关于标准互联网服务 [英] about Standard Internet Services

问题描述

我知道UNIX中的一些标准Internet服务，例如:

i know some Standard Internet Services in UNIX, for example:

Name    TCP port   UDP port     RFC                     Description
echo     7          7           862               Server returns whatever the client sends.

如果我使用 ubuntu ，我怎么知道此服务器?如何打开和使用.
谢谢您的回答.

if i use ubuntu, how can i know about this Server? how to turn on and use.
thank you for your answer.

推荐答案

如果您的计算机上的端口已打开，并且您想查看正在使用的端口，则可以从命令中使用netstat -b线.

请参见 Netstat [ ^ ]选项.

如果服务未运行，并且您想知道可能使用该端口的端口，请参阅端口列表 [ ^ ]

如果要查找远程计算机的端口上正在运行的协议，请使用 nmap [

If the port is open on your computer and you want to see what is using it, you can use netstat -b from the command line.

See Netstat[^] options on Wikipedia.

If the service is not running and you want to know what might use that port, then see the List of ports[^] on Wikipedia

If you want to find what protocol is running on a port on a remote computer, use something like nmap[^]

如果您正在谈论打开机器，则可以"除非您具有物理访问权限或启用了局域网唤醒"支持，并且您有权这样做.

如果要谈论启动应该监听该端口的服务器，那么您必须有权在控制台或通过远程控制台启动它.

如果您在谈论Echo服务器，它所做的全部将返回发送给它的所有内容.如果您需要更多信息，请使用Google for"Echo Server".

If you''re talking about turning the machine on, you can''t unless you''ve got physical access or Wake On LAN support is enabled and you''ve got the authority to do it.

If you''re talking about starting the server that is supposed to be listening to that port, then you have to have authority to start it up, either at the console, or over a remote console.

If you''re talking about the Echo server, all it does it return to you everything that is sent to it. If you''re looking for more information than that, Google for "Echo Server".

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