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・ Echo Park (Colorado)
・ Echo Park (film)
・ Echo Park (novel)
・ Echo Park Dam
・ Echo Park Film Center
・ Echo Park, Los Angeles
・ Echo Party
・ Echo Pass
・ Echo Passage
・ Echo Peak
・ Echo Peak (disambiguation)
・ Echo Peak (Wyoming)
・ Echo Place
・ Echo Planet
・ Echo Point (TV series)
Echo Protocol
・ Echo Ranger
・ Echo removal
・ Echo River
・ Echo Round His Bones
・ Echo School
・ Echo School (Echo, Utah)
・ Echo School (Oregon)
・ Echo Sonata for Two Unfriendly Groups of Instruments
・ Echo sounding
・ Echo state network
・ Echo Stoa
・ Echo subject
・ Echo Summit
・ Echo suppression and cancellation


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Echo Protocol : ウィキペディア英語版
Echo Protocol

The Echo Protocol is a service in the Internet Protocol Suite defined in RFC 862. It was originally proposed for testing and measurement of round-trip times in IP networks.
A host may connect to a server that supports the Echo Protocol using the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP) on the well-known port number 7. The server sends back an identical copy of the data it received.
==Inetd implementation==
On UNIX-like operating systems an echo server is built into the inetd daemon. The echo service is usually not enabled by default. It may be enabled by adding the following lines to the file /etc/inetd.conf and telling inetd to reload its configuration:
echo stream tcp nowait root internal
echo dgram udp wait root internal

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Echo Protocol」の詳細全文を読む



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