{"id":9011,"date":"2018-03-05T14:30:36","date_gmt":"2018-03-05T14:30:36","guid":{"rendered":"https:\/\/www.apen.es\/?page_id=9011"},"modified":"2025-07-14T11:15:32","modified_gmt":"2025-07-14T11:15:32","slug":"vpn","status":"publish","type":"page","link":"https:\/\/www.apen.es\/ca\/glosario-de-informatica\/vpn\/","title":{"rendered":"VPN"},"content":{"rendered":"<h2 class=\"wp-block-heading\">QU\u00c8 \u00c9S UNA VPN?<\/h2>\n\n\n\n<p>Una VPN (Virtual Private Network en angl\u00e8s) \u00e9s una xarxa privada virtual que permet una connexi\u00f3 segura entre dos dispositius o m\u00e9s a trav\u00e9s d&#039;internet. Una VPN autoritza els usuaris a crear una extensi\u00f3 privada dins d&#039;una xarxa local o LAN que pot ser d&#039;\u00fas dom\u00e8stica o empresarial, que permet el tr\u00e0nsit de dades de manera segura. Actua com si fos a la mateixa xarxa que t\u00e9 el VPN. La connexi\u00f3 est\u00e0 xifrada, el prove\u00efdor d&#039;internet no t\u00e9 ni tindr\u00e0 acc\u00e9s a les navegacions i l&#039;adre\u00e7a IP de l&#039;usuari \u00e9s la mateixa que la del servidor VPN.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Funcionament<\/h2>\n\n\n\n<p>La connexi\u00f3 VPN es fa de manera molt segura ja que quan s&#039;envien aquestes dades es troben xifrades en tot moment des de l&#039;entrada de les dades fins a la sortida, com si s&#039;envi\u00e9s a trav\u00e9s d&#039;un t\u00fanel, que no permet l&#039;entrada d&#039;agents exteriors.<\/p>\n\n\n\n<p>Gr\u00e0cies al xifratge aquestes dades no podran ser interpretades, aix\u00f2 \u00e9s degut a que no tenen la clau per poder-les desxifrar. Si alg\u00fa vol tenir acc\u00e9s a aquesta informaci\u00f3 hauria de treure paquets de la xarxa de manera fraudulenta amb una antena i un programa pirata.<\/p>\n\n\n\n<p><strong>Fases<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Recull de dades<\/strong>: Les dades es recopilen en paquets, aquestes dades s\u00f3n bits de CRC informaci\u00f3 de la m\u00e0quina emissora amb la finalitat que la informaci\u00f3 sigui rebuda de manera \u00edntegra.<\/li>\n\n\n\n<li><strong>Canal: <\/strong>Espai per on circula la informaci\u00f3 entre dos punts de manera segura<\/li>\n\n\n\n<li><strong>Xifratge: <\/strong>Un cop tenim l&#039;espai per on circulen les dades, cal estar connectat a un servidor VPN per garantir la seguretat un cop enviades les dades, ja que no es podran interpretar.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Avantatges d&#039;un VPN<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La utilitzaci\u00f3 d&#039;un VPN permet la connexi\u00f3 a qualsevol lloc de la xarxa sense cap mena de restricci\u00f3, sense importar la ubicaci\u00f3 geogr\u00e0fica<\/li>\n\n\n\n<li>Facilita ell va enviar informaci\u00f3 de car\u00e0cter sensible a trav\u00e9s d&#039;internet.<\/li>\n\n\n\n<li>Permet a les empreses accedir de manera remota als servidors i les xarxes<\/li>\n\n\n\n<li>F\u00e0cil configuraci\u00f3 i utilitzaci\u00f3, ja que es pot activar i desactivar de manera senzilla<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Tipus de VPN<\/h2>\n\n\n\n<p>Les principals caracter\u00edstiques dels tipus m\u00e9s comuns de xarxes VPN<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">VPN basada en xarxa<\/h3>\n\n\n\n<p>La xarxa VPN basada en xarxa permet a diferents xarxes connectar-se entre si amb la finalitat d&#039;augmentar la seguretat. Normalment \u00e9s utilitzada per empreses que tenen diferents sucursals, podent aix\u00ed compartir la informaci\u00f3 des de diferents zones geogr\u00e0fiques de manera segura.<\/p>\n\n\n\n<p>\u00c9s important establir a quina informaci\u00f3 es tindr\u00e0 acc\u00e9s, com funcionar\u00e0 la verificaci\u00f3 i els dispositius encarregats de desxifrar les dades<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">VPN basada en client<\/h3>\n\n\n\n<p>La xarxa VPN basada en el client permet que l&#039;usuari es connecti a una xarxa remota gr\u00e0cies a una aplicaci\u00f3. L&#039;usuari a trav\u00e9s de l&#039;aplicaci\u00f3 amb un nom i una contrasenya es pot connectar de manera remota a un equip de manera segura. \u00c9s una manera senzilla de connectar-se a una xarxa local exterior garantint la privadesa de la informaci\u00f3, ideal per a persones que treballen des de casa i necessitin informaci\u00f3 sensible de l&#039;empresa.<\/p>\n\n\n\n<p>Hi ha diferents tipus de VPN, serveis gratu\u00efts i altres de pagament. Alguns s\u00f3n:<\/p>\n\n\n\n<p><strong>VPN Gratu\u00eftes<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tunnelbear<\/li>\n\n\n\n<li>Hotspot Shield Free<\/li>\n\n\n\n<li>Speedify<\/li>\n<\/ul>\n\n\n\n<p><strong>VPN de Pagament<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Express VPN<\/li>\n\n\n\n<li>IPVanish VPN<\/li>\n\n\n\n<li>Hide My Ass<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u00bfQUE ES UNA VPN? Una VPN (Virtual Private Network en ingl\u00e9s) es una red privada virtual que permite una conexi\u00f3n segura entre dos o m\u00e1s dispositivos a trav\u00e9s de internet. Una VPN autoriza a los usuarios la creaci\u00f3n de una extensi\u00f3n privada dentro de una red local o LAN que puede ser de uso dom\u00e9stica&#8230;<\/p>","protected":false},"author":4,"featured_media":0,"parent":6185,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-landing-glosario.php","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-9011","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VPN - 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