How Do I Install a Web Server Certificate?


Scott Campbell

How Do I Install a Web Server Certificate?

Installing a web server certificate is an essential step in ensuring the security of your website. A web server certificate, also known as an SSL/TLS certificate, encrypts the data transmitted between your website and its visitors, preventing unauthorized access and potential data breaches. In this tutorial, we will guide you through the process of installing a web server certificate on your server.

Step 1: Generate a Certificate Signing Request (CSR)

Before you can install a web server certificate, you need to generate a Certificate Signing Request (CSR). A CSR contains information about your organization and is used to create a digital signature for your certificate. To generate a CSR, follow these steps:

  1. Access your server’s command-line interface: Log in to your server using SSH or any other preferred method.
  2. Generate the CSR: Run the following command: openssl req -new -newkey rsa:2048 -nodes -keyout yourdomain.key -out yourdomain.csr. Replace yourdomain with the domain name associated with the certificate.
  3. Provide the required information: You will be prompted to enter information such as your country, organization name, common name (domain name), etc.

    Fill in these details accurately.

  4. Save the CSR and private key: The above command will generate two files: yourdomain.csr, which is the CSR file, and yourdomain.key, which is the private key file. Make sure to save both files securely.

Step 2: Submit the CSR to a Certificate Authority (CA)

Once you have generated the CSR, you need to submit it to a trusted Certificate Authority (CA). The CA will verify your information and issue the web server certificate. Follow these steps:

  1. Choose a trusted CA: There are several CAs available, such as Let’s Encrypt, Comodo, and Symantec. Choose a CA that fits your requirements.
  2. Submit the CSR: Access the chosen CA’s website and follow their instructions for submitting a CSR.

    You may need to create an account and provide additional information.

  3. Verify your domain ownership: Some CAs may require you to verify that you own the domain. This can be done by adding a specific DNS record or uploading a file provided by the CA to your server.
  4. Complete any additional verification steps: Depending on the CA’s policies, additional verification steps may be required. This can include verifying your organization’s legal status or providing supporting documents.
  5. Receive the web server certificate: Once approved, the CA will issue your web server certificate and provide it in a downloadable format.

Step 3: Install the Web Server Certificate

Now that you have obtained the web server certificate from the CA, it’s time to install it on your server. The exact process may vary depending on your server software (e.g., Apache, Nginx, IIS). Here are general instructions:

A) Apache Web Server

  1. Open the SSL configuration file: Locate and open your Apache server’s SSL configuration file. The file is typically named ssl.conf or httpd-ssl.conf.
  2. Locate the SSL certificate directives: Look for the following lines in the configuration file:
    • SSLCertificateFile
    • SSLCertificateKeyFile
    • SSLCertificateChainFile
  3. Edit the directives: Update the paths to point to your web server certificate, private key, and intermediate certificate files respectively.
  4. Save and exit: Save the changes and exit the configuration file.

B) Nginx Web Server

  1. Edit your Nginx configuration file: Locate and open your Nginx server’s configuration file. The file is typically named nginx.
  2. Add SSL certificate directives: Inside the appropriate server block, add the following lines:
    • ssl_certificate /path/to/yourdomain.crt;
    • ssl_certificate_key /path/to/yourdomain.key;
    • ssl_trusted_certificate /path/to/intermediate.crt;

    Replace the paths with your actual certificate, private key, and intermediate certificate files.


You have successfully installed a web server certificate on your server. This ensures that the communication between your website and its visitors is encrypted and secure. Remember to regularly update and renew your certificate to maintain optimal security.

By following this tutorial, you have learned how to generate a CSR, submit it to a CA, and install the web server certificate on popular web servers like Apache and Nginx. Secure your website today!