How to set up SSH on Ubuntu Server
Introduction SSH (Secure Shell) is essential for securely managing remote Linux servers. This guide walks through installing OpenSSH Server on Ubuntu, configuring SSH key authentication, and applying security best practices. What you’ll learn: Install and configure OpenSSH Server Set up SSH key-based authentication Disable password authentication for security Configure SSH client for convenience Troubleshoot common SSH issues Prerequisites Ubuntu Server installed (18.04 LTS, 20.04 LTS, 22.04 LTS, or 24.04 LTS) sudo/root access on the Ubuntu server Local computer with SSH client (Linux/macOS have it built-in, Windows uses PowerShell or PuTTY) Network connectivity between your computer and the server Part 1: Install OpenSSH Server SSH into the VM console or use the Proxmox console to run these commands....