According to who manages them:

Own Cookies: those sent and managed by a device or domain belonging to the publisher of the website being visited.

Third-party Cookies: those sent and managed by a third party that is not the website's publisher, when they come from another server. For example, those used by social networks, or by external content such as Google Maps.

According to the purpose for which the data obtained from them is processed:

Technical Cookies: allow the user to browse a web page and use the different options or services that exist on it, such as controlling traffic, identifying the user's session, accessing restricted areas, remembering the items that make up an order, submitting a registration request or participation in an event, using security features during browsing, storing content for the broadcast of video or sound, or sharing content through social networks.

Personalisation Cookies: those that allow you to access the service with predefined characteristics based on a series of criteria, such as the language, the type of browser through which the service is accessed, the regional settings from which the service is accessed, etc.

Analysis Cookies: those that allow us to quantify the number of users and thus carry out the measurement and statistical analysis of how users use the services provided, and on that basis also apply design and speed improvements.

Behavioural advertising Cookies: those that store information on users' behaviour obtained through the continuous observation of their browsing habits, which makes it possible to develop a specific profile in order to show advertising based on it.

According to their expiry:

Session Cookies: temporary Cookies that remain in the browser's Cookie file until the web page is left. They are usually used to analyse traffic patterns on the web. In the long run, this makes it possible to provide a better experience to improve content and make it easier to use.

Permanent Cookies: stored on the terminal and read by the web page each time a new visit is made. Despite their name, a permanent Cookie has a set expiry date. The Cookie will stop working after that date, which can range from a few minutes to several years. They are generally used to facilitate the different services offered by websites.

Cookies used:

This web portal uses Cookies that are strictly essential in order to use our website and browse freely, use the security areas, personalised options, etc. No personal data is collected unless you wish to register, voluntarily, in order to purchase the products and services we make available to you or to receive information about promotions and content of interest with your prior consent.

Data is not transferred to third parties; however, our web portal may contain links to third-party websites whose privacy policies are outside our control. When accessing such websites, you can decide whether to accept their privacy and Cookie policies.

They may also contain links to Social Networks (such as Facebook or Twitter). Our web portal has no control over the Cookies used by these external websites. For more details on social network Cookies or those of unrelated websites, we recommend you review their own Cookie policies.

Third-party Cookies used:

_ga, __utma, __utmb, __utmc, __utmz, __utmv: Cookies associated with Google Analytics.

They make it possible to distinguish the different users of the website. They expire after two years.

Configure or disable Cookies:

All internet browsers allow you to limit the behaviour of a Cookie or disable Cookies within the browser's settings or options. The steps to do this are different for each browser, and instructions can be found in your browser's help menu. In the following links you have all the information available to configure or disable Cookies in each browser:

Chrome: http://support.google.com/chrome/bin/answer.py?hl=es&answer=95647

Firefox: http://support.mozilla.org/es/kb/habilitar-y-deshabilitar-Cookies-que-los-sitios-we

Edge: https://privacy.microsoft.com/es-es/windows-10-microsoft-edge-and-privacy

Safari: https://support.apple.com/kb/PH21411?locale=es_ES&viewlocale=es_ES