Telnet is a terminal simulation protocol in the TCP / IP environment, and the connection between the server and the client is established through the TCP. After the connection, the Telnet server is negotiated with the client (decision option) so that both parties support the connection operation, each connection system can negotiate the new optional or heavy negotiation Old option (at any time), in short each Telnet connection Terminal to perform all options to maximize the system.
Once the Telnet connection is established, the Telnet protocol defaults to both ends including terminals and print devices, such as the network virtual terminal (NVT). NVT is an epigeval device that provides a standard network of a standard network to avoid the need for "server" and "users" to maintain information such as terminal and terminal processing examples.
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