OpenSSH

OpenSSH is a free and open-source suite of secure networking utilities based on the Secure Shell (SSH) protocol, providing encrypted communication sessions over a computer network. It includes tools like ssh for secure remote login, scp for secure file transfer, and sftp for secure file management. Widely used on Unix-like systems, it is the standard implementation for SSH in many operating systems, including Linux and macOS.

Also known as: Open SSH, Open Secure Shell, SSH, Secure Shell, openssh

Why learn OpenSSH?

Developers should learn OpenSSH for securely accessing and managing remote servers, automating deployments, and transferring files over untrusted networks, as it is essential for system administration, cloud infrastructure, and DevOps workflows. It is particularly crucial when working with Linux servers, cloud instances (e.g., AWS EC2, Azure VMs), or any environment requiring encrypted remote access to prevent eavesdropping and attacks.

Learning Resources

• docs: OpenSSH Official Documentation
• tutorial: SSH Essentials: Working with SSH Servers, Clients, and Keys
• book: OpenSSH Mastery: IT Mastery Book Series
• video: How to Use SSH to Connect to a Remote Server
• course: Linux Academy: SSH Fundamentals