Telnet Overview
Telnet is an application protocol used on the web or local area networks to produce a duplex interactive text-oriented
communication facility using a virtual terminal connection. User information is interspersed in-band with Telnet
management info in an 8-bit byte destined information connection over the Transmission control Protocol (TCP).
Telnet was developed in 1968 starting with RFC fifteen, extended in RFC 854, and standardized as web Engineering
Task Force (IETF) web standard STD eight, one in all the primary web standards.
Historically, Telnet provided access to a command-line interface (usually, of an operating system) on a far off host.
Most network equipment and in operation systems with a TCP/IP stack support a Telnet service for remote
configuration (including systems supported Windows NT). However, as a result of serious security problems once
exploitation Telnet over an open network like the web, its use for this purpose has waned considerably in favor of SSH.
The term telnet may additionally confer with the software system that implements the client a part of the protocol.
Telnet client applications are accessible for virtually all PC platforms. Telnet is additionally used as a verb. To telnet
suggests that to determine a reference to the Telnet protocol, either with instruction client or with a programmatic
interface. as an example, a typical directive would possibly be: “To change your password, telnet to the server, log in
and run the passwd command.” most frequently, a user are telnetting to a Unix-like server system or a network device
(such as a router) and getting a login prompt to a instruction text interface or a character-based full-screen manager.
Characteristic
RFC15 (1969)
Port 23
Transmit in plain text
Bandwidth light
Pure text interface
របៀបremote ចូលក្នុង switch and router តាម Telnet
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