SSH
Secure Shell
Application Layer — Remote Access
Protocol Overview
Full Name
Secure Shell
Abbreviation
SSH
OSI Layer
Application Layer
Category
Remote Access
Default Port
22
RFC
RFC 4253
About SSH
Encrypted protocol for secure remote login, command execution, and tunneling. Replaced insecure Telnet for server administration.
Application Layer
Remote Access
Port 22
Standards Reference
SSH is defined in RFC 4253, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.