How to Set Up SSL Certificates
Configure SSL/TLS certificates for your domains with automatic renewal and proper security settings.
What You'll Learn
This beginner-level guide walks you through how to set up ssl certificates step by step. Estimated time: 8 min.
Step 1: Choose your certificate approach
Use Let's Encrypt for free automated certificates, AWS ACM for AWS services, or Cloudflare for CDN-integrated SSL.
Step 2: Generate and install certificates
Run Certbot for Let's Encrypt or configure your cloud provider's certificate service for automatic provisioning.
Step 3: Configure your web server
Update Nginx, Apache, or your load balancer configuration to serve HTTPS with proper cipher suites and protocols.
Step 4: Set up automatic renewal
Configure cron jobs or systemd timers for Let's Encrypt renewal, or use managed services that handle renewal automatically.
Step 5: Implement security headers
Add HSTS, CSP, and other security headers to enforce HTTPS and protect against common web attacks.
Frequently Asked Questions
Do I need to pay for SSL certificates?▾
No. Let's Encrypt provides free, automated SSL certificates trusted by all browsers. Paid certificates are only needed for extended validation or specialized use cases.
How do I handle SSL for multiple subdomains?▾
Use wildcard certificates with Let's Encrypt DNS validation, or individual certificates per subdomain. Cloudflare provides automatic SSL for all proxied subdomains.
What TLS version should I support?▾
Support TLS 1.2 and 1.3 only. Disable TLS 1.0 and 1.1 as they have known vulnerabilities. Most modern clients support TLS 1.2 at minimum.