Telnet

Protocol for interactive text-oriented communication sessions.

TELNET

Telnet is an older protocol used to establish interactive text-oriented communication sessions over a network. Primarily used for remote login to servers, it transmits data in plain text, making it insecure and largely superseded by more secure protocols like SSH.

Telnet is a portmanteau of 'telecommunication' and 'network'.

Telnet is like an old-fashioned way to chat with a computer over the internet, typing commands and seeing text pop up.

What is Telnet? It's a protocol for interactive text-based communication sessions
Is it secure? No, Telnet transmits data in plain text, making it vulnerable to eavesdropping
Is it still used? While largely replaced by more secure protocols like SSH, Telnet is sometimes used for legacy systems

protocol network protocol

Internet TCP/IP

data communication network protocol