Telnet

E5624

application layer protocol command-line tool network protocol remote access tool remote terminal protocol

Telnet is a network protocol and command-line tool that allows users to remotely access and manage devices over a text-based terminal connection.

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Observed surface forms (12)

Surface form	Occurrences
DONT Telnet command	1
Telnet DONT command	1
Telnet Protocol Specification	1
Telnet WILL command	1
Telnet WONT command	1
Telnet are-you-there signal	1
Telnet end-of-line conventions	1
Telnet protocol	1
Telnet protocol options	1
Telnet protocol specification	1
Telnet timing and synchronization commands	1
WONT Telnet command	1

Predicate	Object
instanceOf	application layer protocol ⓘ command-line tool ⓘ network protocol ⓘ remote access tool ⓘ remote terminal protocol ⓘ
canAccess	custom TCP services ⓘ mail servers for testing ⓘ web servers for testing ⓘ
commonlyAvailableOn	Unix ⓘ surface form: BSD Linux ⓘ Unix-like operating systems ⓘ Windows ⓘ macOS ⓘ
commonlyReplacedBy	SSH ⓘ
connectionType	stateful ⓘ
defaultPort	23 ⓘ
definedInRFC	RFC 854 ⓘ RFC 855 ⓘ
designedFor	remote command execution ⓘ remote login ⓘ
hasClient	telnet command-line program ⓘ
hasDrawback	no built-in encryption ⓘ susceptible to credential theft ⓘ susceptible to eavesdropping ⓘ
hasSecurityProperty	insecure by modern standards ⓘ
hasServer	telnet daemon ⓘ
introducedInYear	1969 ⓘ
operatesOnLayer	application layer ⓘ
OSIModelLayer	layer 7 ⓘ
recommendedUsage	only on trusted or isolated networks ⓘ
runsOver	IP ⓘ
sessionOrientation	full-duplex ⓘ
standardizedBy	Internet Engineering Task Force ⓘ surface form: IETF
supports	interactive sessions ⓘ text-based terminal connection ⓘ
supportsAuthentication	username and password ⓘ
supportsOptionNegotiation	yes ⓘ
transmits	plaintext passwords ⓘ unencrypted data ⓘ
usedFor	debugging network services ⓘ network device management ⓘ remote server access ⓘ router configuration ⓘ switch configuration ⓘ testing TCP connectivity ⓘ
usesEncoding	ASCII ⓘ
usesModel	client-server model ⓘ
usesTransportProtocol	Transmission Control Protocol ⓘ surface form: TCP

Full triples — surface form annotated when it differs from this entity's canonical label.

RFC 855 → applicationLayerProtocol → Telnet ⓘ

RFC 855 → basedOn → Telnet ⓘ

this entity surface form: Telnet protocol

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet WILL command

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet WONT command

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet DONT command

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet end-of-line conventions

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet timing and synchronization commands

RFC 854 → defines → Telnet ⓘ

this entity surface form: Telnet are-you-there signal

RFC 855 → definesConcept → Telnet ⓘ

this entity surface form: WONT Telnet command

RFC 855 → definesConcept → Telnet ⓘ

this entity surface form: DONT Telnet command

ARPANET protocol suite → hasComponent → Telnet ⓘ

TCP/IP → includesProtocol → Telnet ⓘ

RFC 855 → networkProtocol → Telnet ⓘ

ARPANET protocol suite → notableProtocol → Telnet ⓘ

RFC 854 → protocolSpecified → Telnet ⓘ

RFC 854 → relatedProtocol → Telnet ⓘ

SSH → replaced → Telnet ⓘ

RFC 855 → standardizes → Telnet ⓘ

this entity surface form: Telnet protocol options

Cisco IOS → supportsProtocol → Telnet ⓘ

PuTTY → supportsProtocol → Telnet ⓘ

RFC 854 → title → Telnet ⓘ

this entity surface form: Telnet Protocol Specification

RFC 855 → updates → Telnet ⓘ

this entity surface form: Telnet protocol specification