Telnet is a computer protocol that provides two-way interactive communication compatibility for computers on the Internet and local area networks. Telnet has a command-line interface and is famous for being the original protocol when the Internet was first launched in 1969.
Telnet vs SSH explained
Over time, Telnet's use declined in favor of SSH (Secure Shell or Secure Socket Shell) due to security concerns when used over an open network. Telnet lacks authentication policies and data encryption.
Telnet refers to a virtual terminal protocol for networking. The abbreviation comes from teletype network, terminal network, or telecommunications network, depending on which source you believe. It was built as a form of remote control to manage mainframe computers from distant terminals.
Telnet allowed research students and professors to log into a university mainframe from any terminal in the building in the days of large mainframe computers. This remote login saved researchers hours of walking each semester.
