SSL with Nginx & Certbot
Obtain a free Let's Encrypt SSL certificate with Certbot, configure Nginx for HTTPS, enforce HTTP-to-HTTPS redirects, and automate renewal with a cron job.
Hands-On: HTTPS for a Live Nginx Site
A real end-to-end Certbot session on Ubuntu — pre-flight DNS checks, issuing the cert with the Nginx plugin, and proving renewal works.