https://blog.serviciosrogeliowar.com/en/tags/autenticaci%C3%B3n/Recent content in Autenticación on Servicios RogeliowarHugo -- gohugo.ioen© 2026 Rogelio Guerra RiverónThu, 30 Apr 2026 00:00:00 +0000https://blog.serviciosrogeliowar.com/en/posts/autenticacion-ssh-por-clave-publica-desactivar-contrasenas-en-ubuntu-server/Thu, 30 Apr 2026 00:00:00 +0000https://blog.serviciosrogeliowar.com/en/posts/autenticacion-ssh-por-clave-publica-desactivar-contrasenas-en-ubuntu-server/<h2 class="relative group">Why Switch to Key-Based Authentication <div id="why-switch-to-key-based-authentication" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#why-switch-to-key-based-authentication" aria-label="Anchor">#</a> </span> </h2> <p>After months of maintaining a home server with open SSH access, I got tired of brute force password attacks. Switching to public key authentication was the best security decision I made. Keys are mathematically impossible to crack through brute force, while passwords are always a target.</p> <h2 class="relative group">SSH Key Generation <div id="ssh-key-generation" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#ssh-key-generation" aria-label="Anchor">#</a> </span> </h2> <p>First, generate a key pair on your local machine (not on the server):</p>