Telnet
Telnet
Application Layer — Remote Access
Protocol Overview
Full Name
Telnet
Abbreviation
Telnet
OSI Layer
Application Layer
Category
Remote Access
Default Port
23
RFC
RFC 854
About Telnet
Legacy unencrypted remote terminal protocol. Transmits data including passwords in plaintext. Replaced by SSH for security.
Application Layer
Remote Access
Port 23
Standards Reference
Telnet is defined in RFC 854, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.