SSH
Secure Shell ”” a cryptographic protocol for securely accessing and managing remote servers over a network.
Also: Secure Shell
Definition
SSH (Secure Shell) is a cryptographic network protocol for operating network services securely over an unsecured network. It provides encrypted command-line access to remote servers, secure file transfer (SFTP/SCP), and port forwarding. SSH replaced insecure protocols like Telnet and rlogin. Authentication can use passwords or public-key cryptography (SSH key pairs). SSH operates on port 22 by default and is the standard tool for server administration.
Example
“A system administrator types ssh admin@192.168.1.100 to securely access a Linux server, with all keystrokes encrypted so no one can intercept commands.”
Usage Examples
- 1
“The team applied ssh best practices to improve their networking outcomes significantly.”
- 2
“Understanding ssh is essential for anyone building a career in IT & Technology.”
When & How to Use
Use 'SSH' when working in Networking contexts where ssh (secure shell) is a cryptographic network protocol for operating network services securely over an unsecured network.
- ▸Applying ssh principles during a networking project or initiative
- ▸Explaining ssh to a junior team member or stakeholder unfamiliar with IT & Technology
- ▸Evaluating options or proposals using ssh as a decision-making criterion
Etymology & Origin
The term 'SSH' derives from professional usage and entered IT & Technology professional usage as the field formalised in the 20th century.
History & Evolution
The concept of ssh has evolved alongside IT & Technology. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of networking in the mid-20th century. Today, ssh is a standard part of IT & Technology practice globally.
Synonyms
- secure remote login
- encrypted shell
- secure terminal
Antonyms / Opposites
- Telnet
- unencrypted remote access
Images
CC-licensed · free to useVideo
Related Terms
- encryption
- remote-access
- public-key-infrastructure
- sftp