What is SSH?

[manoharparakh]

SSH (secure shell) is an encrypted replacement for the Unix tool rsh (remote shell), often used as a replacement for telnet for getting a command-line login on a remote computer.

A shell is a piece of software that allows you to communicate with the core of your operating system. This is typically done via a command line interface.

You don’t need to be at a computer to access a shell. A shell account is a personal account that lets you access a shell from a different computer. These used to be commonplace, used to access files, email, news, and more.

A web browser uses the HTTP to communicate with websites. Whereas, a shell account uses a different protocol…..It uses public key encryption to provide more security than other insecure shell protocols such as FTP or Telnet.

Two major versions, SSH-1 and SSH-2, are now the dominate ways to access shell accounts.

When you need to take matters more into your own hands, SSH can be a great friend than VPN(Virtual Private Network)

 

[sirishasiri]

Secure Shell (SSH) offers a safe way to communicate with a server and to connect to systems remotely. Consequently, SSH is a vital skill for anyone who works in IT. In this short course, Scott Simpson explains what SSH is and shows how to connect to an SSH server from different operating systems.

 

[Bhushancloud]

SSH, also known as Secure Socket Shell, is a network protocol that provides administrators with a secure way to access a remote computer. SSH also refers to the suite of utilities that implement the protocol. Secure Shell provides strong authentication and secure encrypted data communications between two computers connecting over an insecure network such as the Internet. SSH is widely used by network administrators for managing systems and applications remotely, allowing them to log in to another computer over a network, execute commands and move files from one computer to another.