{"id":3553,"date":"2025-10-05T00:00:00","date_gmt":"2025-10-04T22:00:00","guid":{"rendered":"https:\/\/tecnologia.euroinnova.com\/ssl\/"},"modified":"2025-10-14T11:58:55","modified_gmt":"2025-10-14T09:58:55","slug":"ssl","status":"publish","type":"post","link":"https:\/\/tecnologia.euroinnova.com\/en\/ssl","title":{"rendered":"SSL"},"content":{"rendered":"<p><strong>SSL (Secure Sockets Layer)<\/strong> is a security protocol that enables the <strong>encrypted data transmission<\/strong> between a server and a client, usually a website and a browser.<\/p>\n<p>This technology ensures that the <strong>sensitive data<\/strong>, such as passwords, credit card details and personal data, are transmitted securely over the internet, preventing them from being intercepted by malicious third parties.<\/p>\n<p>Although it is currently used <strong>TLS (Transport Layer Security)<\/strong> Although it is an enhanced version of SSL, the term \u00abSSL\u00bb is still widely used to refer to this type of security.<\/p>\n<h2 id=\"que-es-un-certificado-ssl-y-para-que-sirve\"><strong>What is an SSL certificate and what is it used for?<\/strong><\/h2>\n<p>A <strong>SSL certificate<\/strong> It is a data file that links a cryptographic key to the details of an organisation or individual.<\/p>\n<p>When installed on a server, the certificate <strong>enable the HTTPS protocol<\/strong> and secures the connection between the server and the web browser. This builds trust among users, who can tell that the site is secure when they see a padlock in the browser\u2019s address bar.<\/p>\n<p>An SSL certificate is essential for securing online transactions and ensuring the <strong>confidentiality<\/strong> y <strong>authenticity<\/strong> of communication.<\/p>\n<p>The main benefits of having an SSL certificate are:<\/p>\n<ul type=\"disc\">\n<li><strong>Data encryption<\/strong>: The data sent between the server and the client is protected using advanced encryption techniques, preventing third parties from accessing it.<\/li>\n<li><strong>Authentication<\/strong>: It ensures that the website is genuine and not a fake set up to steal information.<\/li>\n<li><strong>User confidence<\/strong>: Websites with SSL display security indicators, such as the padlock and the \u00abhttps\u00bb prefix, which help to build trust among visitors.<\/li>\n<\/ul>\n<h2 id=\"como-funcionan-los-certificados-ssl\"><strong>How do SSL certificates work?<\/strong><\/h2>\n<p>When a browser attempts to connect to an SSL-secured website, a process known as <strong>handshake<\/strong> (handshake), which involves the following steps:<\/p>\n<ol type=\"1\">\n<li>The browser requests the server\u2019s identity.<\/li>\n<li>The server sends a copy of its <strong>SSL certificate<\/strong>, which includes their public key.<\/li>\n<li>The browser checks the SSL certificate to ensure that it is genuine and trustworthy.<\/li>\n<li>If the certificate is valid, the browser generates a session key, encrypts it using the server\u2019s public key, and sends it.<\/li>\n<li>The server decrypts the session key using its private key.<\/li>\n<li>From this point onwards, all communication between the browser and the server is encrypted using that session key.<\/li>\n<\/ol>\n<h2 id=\"tipos-de-certificados-ssl\"><strong>Types of SSL certificates<\/strong><\/h2>\n<p>There are several types of SSL certificates, which vary according to the level of validation and the number of domains they can protect:<\/p>\n<ul>\n<li><strong>Domain Validation (DV) Certificates<\/strong>: They verify that the applicant is the owner of the domain. These are the most basic and quickest to obtain.<\/li>\n<li><strong>Organisation Validation (OV) Certificates<\/strong>: They require validation of the organisation behind the domain, which provides an additional level of trust.<\/li>\n<li><strong>Extended Validation (EV) Certificates<\/strong>: These are the most secure and reliable. The browser\u2019s address bar displays the organisation\u2019s name alongside the padlock, guaranteeing maximum authenticity.<\/li>\n<li><strong>Wildcard certificates<\/strong>: They protect a primary domain and all its subdomains.<\/li>\n<li><strong>Multi-Domain (SAN) Certificates<\/strong>: They allow you to secure several different domains with a single certificate.<\/li>\n<\/ul>\n<h2 id=\"como-obtener-un-certificado-ssl\"><strong>How do I get an SSL certificate?<\/strong><\/h2>\n<p>To obtain an SSL certificate, you need to follow these steps:<\/p>\n<ol>\n<li><strong>Select a supplier<\/strong> SSL certificate providers, such as Let\u2019s Encrypt, Comodo or DigiCert.<\/li>\n<li><strong>Generate a certificate signing request (CSR)<\/strong> from the server on which the certificate is to be installed.<\/li>\n<li>The supplier will verify the <strong>applicant\u2019s identity<\/strong> (depending on the type of certificate) and will issue the certificate.<\/li>\n<li><strong>Install the certificate<\/strong> on the web server.<\/li>\n<li>Configure the server to <strong>enforce the use of HTTPS<\/strong>, by redirecting all HTTP traffic to the secure protocol.<\/li>\n<\/ol>\n<p>You may be interested in our specialised training in <strong>data processing<\/strong>...<\/p>\n<ul>\n<li><a href=\"https:\/\/www.euroinnova.com\/curso-looker\" target=\"_blank\" rel=\"noopener\"><strong>Course in Data Analysis and Visualisation with Looker<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.euroinnova.com\/curso-data-science\" target=\"_blank\" rel=\"noopener\"><strong>Advanced Course in Data Science<\/strong><\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>SSL (Secure Sockets Layer) es un protocolo de seguridad que permite la transmisi\u00f3n de datos cifrados entre un servidor y [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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