Certainly! Here's a concise guide on how to obtain a free SSL certificate in English:

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How to Get a Free SSL Certificate

Securing your website with HTTPS is essential for protecting your users' data and ensuring their privacy. SSL (Secure Sockets Layer) certificates are what enable HTTPS, and fortunately, you can get them for free. Here's a step-by-step guide on how to obtain a free SSL certificate.

1. Let's Encrypt and Certbot

Let's Encrypt is a free, automated, and open Certificate Authority (CA) that provides SSL certificates. Certbot is a tool that automates the process of obtaining and renewing Let's Encrypt certificates.

• Step 1: Install Certbot
  If you're using a Unix-based system, you can install Certbot with the following command:

  sudo apt-get update && sudo apt-get install certbot

• Step 2: Obtain the Certificate
  Use Certbot to get a certificate for your domain:

  sudo certbot certonly --standalone -d yourdomain.com

  This command will automatically validate your domain and obtain a certificate.

• Step 3: Configure Your Web Server
  Configure your web server to use the newly issued certificate. Certbot provides instructions for various web servers like Apache and Nginx.

2. ZeroSSL

ZeroSSL offers both free and paid SSL certificates and uses the ACME protocol for certificate issuance.

• Step 1: Create an Account
  Sign up for a free account on the ZeroSSL website.
• Step 2: Request a Certificate
  Initiate a new certificate request and follow the prompts to validate your domain.
• Step 3: Validate Your Domain
  Choose your preferred validation method and complete the domain validation process.
• Step 4: Download and Install
  Once validated, download the certificate files and install them on your server.

3. Cloudflare

Cloudflare provides free SSL/TLS certificates along with CDN and security services.

• Step 1: Sign Up and Add Your Site
  Create a Cloudflare account and add your website.
• Step 2: Update DNS Settings
  Change your DNS settings to use Cloudflare's nameservers.
• Step 3: Enable HTTPS
  In the Cloudflare dashboard, enable "Always Use HTTPS" and "Automatic HTTPS Rewrites" to secure your site.

4. AWS Certificate Manager

AWS Certificate Manager (ACM) offers free public certificate services for AWS resources.

• Step 1: Request a Certificate
  Navigate to the ACM console and request a public certificate.
• Step 2: Add Domain Names
  Add the domain names for which you want the certificate.
• Step 3: Choose Validation Method
  AWS will guide you through the domain validation process.
• Step 4: Use the Certificate
  After the certificate is issued, you can use it with AWS services like Elastic Load Balancing or CloudFront.

By following these steps, you can secure your website with a free SSL certificate. Remember, the process may vary slightly depending on your specific server setup and the service you choose. Always refer to the most recent documentation provided by the service for the most accurate and up-to-date instructions.

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This guide provides a general overview of how to get a free SSL certificate. Each service has its own detailed documentation that you should consult for specific instructions tailored to your setup.