If you want to secure your website with an SSL/TLS certificate, you can use a free self-signed SSL/TLS certificate. You can also purchase an SSL/TLS certificate directly through Plesk, generate a Certificate Signing Request (CSR for short) to purchase one from a Certification Authority, or protect your website with a certificate you already own.

Nota: si protege su sitio web con un certificado SSL/TLS autofirmado se protegerá a los visitantes del sitio gracias al cifrado de las comunicaciones desde y hacia el servidor, si bien no se verificará la autenticidad de su sitio web. Los visitantes del sitio verán una advertencia acerca de la invalidez del certificado en sus navegadores.

To secure your website with a self-signed certificate, you need to generate one first. To do so, go to Websites & Domains > your website > SSL/TLS Certificates > «Advanced Settings» > and click Add SSL/TLS Certificate. Fill out the fields marked with the red asterisk symbol (*), such as the certificate name (you will use it to identify the certificate in the list of all certificates), your personal information, the name of the domain the certificate will be protecting, and so on.

Nota: si desea generar un certificado SSL/TLS wildcard, su nombre de dominio debe empezar por un asterisco (*). Por ejemplo, un certificado generado para *.example.com puede usarse para proteger cualquier subdominio de example.com.

When you have finished, click Self-Signed. This will result in the self-signed certificate being generated and placed in your repository. You can see a list of all SSL/TLS certificates in your repository by going to Websites & Domains > your website > SSL/TLS Certificates > «Advanced Settings».

Now that the certificate has been generated, you need to install it. Go to Websites & Domains > your website > Hosting Settings. From the Certificate menu, select the certificate you have just generated and then click OK.