What is Let’s Encrypt SSL is and How does it Work?

In the modern digital environment, the protection of websites is of the utmost significance. Implementing SSL certificates, also known as Secure Sockets Layer certificates, to encrypt the communication that takes place between a user’s browser and the web server is one of the most important aspects of website security.

Let’s Encrypt is a Certificate Authority (CA) that has gained widespread adoption and is completely free to use. It issues SSL certificates to websites that are safe to use. In this article, we will discuss what Let’s Encrypt SSL is, how it operates, and give an example of putting Let’s Encrypt SSL into action on a Virtual Private Server (VPS) located in the Netherlands.

What is Let’s Encrypt SSL?

Let’s Encrypt is a non-profit organization dedicated to making the internet more secure by distributing free SSL certificates. All major browsers trust these certificates, which can be used to secure websites, email servers, and other internet services.

Let’s Encrypt certificates are good for 90 days and are automatically renewed. Let’s Encrypt SSL’s main advantage is its accessibility and ease of use, making it an excellent alternative for small enterprises, personal websites, and developers.

How Does Let’s Encrypt SSL Work?

Let's Encrypt SSL

Source: icdsoft.com

Let’s Encrypt uses the Automated Certificate Management Environment (ACME) protocol to issue SSL certificates. The ACME protocol enables seamless and automated certificate issuance, renewal, and revocation. Here is a step-by-step overview of how Let’s Encrypt SSL works:

  1. Certificate signing request (CSR) generation ─ The first step is to generate a CSR, which includes the public key of your server and information about your domain name and organization. This CSR is used to request an SSL certificate from Let’s Encrypt.
  2. Domain ownership verification ─ Let’s Encrypt necessitates that you provide evidence that you are the owner or administrator of the domain that you are obtaining an SSL certificate for. The validity and safety of the certificate will both be checked off thanks to this process of verification. Let’s Encrypt offers several verification methods, including DNS-01, HTTP-01, and TLS-ALPN-01.
  3. Certificate issuance ─ After confirming that you are the legal owner of the domain, Let’s Encrypt will generate an SSL certificate for your website. The public key, as well as the domain name, the expiration date, and any other pertinent information, is stored within the certificate.
  4. SSL certificate installation ─ The next step is to install the SSL certificate on your web server. The process varies depending on the web server software you are using. Generally, you need to associate the private key generated during CSR generation with the issued SSL certificate.

Example ─ Implementing Let’s Encrypt SSL on a VPS Server in the Netherlands

Source: passwork.pro

Let’s walk through an example of implementing Let’s Encrypt SSL on a VPS server Netherlands using the popular Apache web server:

  1. Connect to your VPS server ─ Log in to your VPS server Netherlands via SSH.
  2. Install Apache web server ─ If Apache is not already installed, use the package manager to install it. For example, on Ubuntu, run the command: sudo apt-get install apache2.
  3. Install Certbot ─ Let’s Encrypt offers a program called Certbot, which is a command-line application, for handling SSL certificates. Install Certbot by following the instructions provided in the operating system’s official documentation.
  4. Request and install SSL certificate ─ Run the Certbot command to generate an SSL certificate and automatically configure Apache to use it. The command may look like this: sudo certbot –apache -d yourdomain.com.
  5. Verify SSL configuration ─ Once the SSL certificate is installed, access your website using HTTPS in a browser. Verify that the SSL padlock icon appears, indicating a secure connection.
  6. Automatic renewal ─ SSL certificates from Let’s Encrypt are valid for 90 days. To ensure uninterrupted security, set up automatic certificate renewal using Certbot’s built-in features or cron jobs.

Note, the preceding example assumes that Apache will be used as the web server on a VPS server in the Netherlands. Let’s Encrypt SSL certificates, on the other hand, are compatible with a wide range of web server software and hosting setups, allowing you to encrypt your website independently of your setup.

Advantages of Let’s Encrypt SSL

Source: thesslstore.com

  1. Cost-effective ─ Let’s Encrypt SSL certificates are provided free of charge, making them an excellent option for individuals and organizations with budget constraints. You can secure your website without incurring additional expenses for SSL certificates.
  2. Easy installation and management ─ Let’s Encrypt has simplified the process of obtaining and installing SSL certificates. With the help of automated tools like Certbot, you can request, install, and configure SSL certificates with just a few simple commands. The automated renewal process ensures that your certificates stay up to date without manual intervention.
  3. Strong security ─ Let’s Encrypt SSL certificates provide the same level of encryption and security as paid certificates. By implementing SSL on your website, you protect sensitive information exchanged between your users and the server, such as login credentials, financial transactions, and personal data.
  4. Browser compatibility ─ Let’s Encrypt certificates are trusted by all major web browsers, ensuring that your website will display the secure padlock icon and inspire confidence in your visitors. It allows you to establish a secure connection and protect the integrity of your website’s data across different browsers.
  5. Community support and documentation ─ Let’s Encrypt has a vibrant community of users and developers who provide support and guidance. The official documentation is comprehensive and covers various aspects of SSL implementation, troubleshooting, and best practices.


Let’s Encrypt SSL certificates provide a safe and low-cost solution for encrypting the communication on your website and safeguarding critical user data. Let’s Encrypt streamlines the process of implementing SSL by using an automated certificate issue and renewal procedure.

This makes SSL more accessible to a wider range of users, including individuals, small businesses, and large corporations. You will be able to improve the safety of your website, win the confidence of your audience, and protect the confidentiality of their information if you install Let’s Encrypt SSL on the VPS server that you host in the Netherlands.

Note, it is essential to regularly monitor and update your SSL certificates to stay up to date with the latest security standards and best practices. Additionally, consider implementing other security measures, such as web application firewalls and regular backups, to further enhance your website’s security.