Secure Your Website with Let’s Encrypt and Nginx: A Step-by-Step Guide

In an era where online security is non-negotiable, encrypting data transmitted between web servers and users is imperative. Let’s Encrypt, a trusted Certificate Authority (CA), provides a seamless solution for obtaining and installing free TLS/SSL certificates. In this tutorial, we’ll guide you through the process of securing your Nginx web server with Let’s Encrypt, ensuring a safer online experience for your website visitors.

Why Separate Nginx Server Configuration Files? One key practice we’ll adopt is the use of separate Nginx server configuration files instead of the default file. This approach involves creating new Nginx server block files for each domain. This not only helps avoid common mistakes but also maintains the default files as a fallback configuration. Let’s dive into the step-by-step process to enhance your website’s security.

Step 1: Installing Certbot To kick off the process, we’ll install Certbot, the official client for Let’s Encrypt. Open your terminal and run the following command:

sudo apt install certbot python3-certbot-nginx

Step 2: Confirming Nginx’s Configuration Next, navigate to the Nginx configuration directory and open the server block file for your domain. We’ll use the nano text editor for this example:

sudo nano /etc/nginx/sites-available/example.com

Paste the necessary server_name configuration inside the server block:

server_name example.com www.example.com;

Step 3: Obtaining an SSL Certificate Now comes the exciting part – obtaining an SSL certificate from Let’s Encrypt. Execute the following Certbot command, replacing “example.com” with your domain:

Step 4: Verifying Certbot Auto-Renewal Ensuring that your SSL certificates stay up to date is crucial. Check the Certbot timer status using:

sudo systemctl status certbot.timer

To simulate a renewal, run a dry-run command:

service nginx status

if you want to include www.example.com simply add

-d example.com

certbot certonly --standalone -d example.com --staple-ocsp -m email@example.com --agree-tos

For Renewal simple Run

sudo certbot renew --dry-run

More About Linux Server: This tutorial assumes you are working with a Linux server environment. The commands provided are tailored for a Linux distribution, specifically using the apt package manager. Ensure that your server meets these prerequisites before proceeding.

Conclusion: By following these steps, you’ve successfully fortified your Nginx web server with Let’s Encrypt, adding an extra layer of security to your website. Embrace the encrypted HTTPS protocol, protect sensitive data, and contribute to a safer online ecosystem. Stay vigilant by regularly checking and renewing your certificates, ensuring a continuous shield against potential security threats. Your commitment to web security is a crucial step towards building trust with your audience in an ever-evolving digital landscape.