{"id":18376,"date":"2026-11-12T10:00:00","date_gmt":"2026-11-12T09:00:00","guid":{"rendered":"https:\/\/epic.es\/?p=18376"},"modified":"2026-10-15T10:22:53","modified_gmt":"2026-10-15T08:22:53","slug":"que-es-un-tallafoc-empresa","status":"publish","type":"post","link":"https:\/\/epic.es\/ca\/que-es-un-tallafoc-empresa\/","title":{"rendered":"Qu\u00e8 \u00e9s un tallafoc i per a qu\u00e8 serveix en una empresa"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"inLanguage\":\"es\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"\u00bfQu\u00e9 es un firewall?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Es un dispositivo o programa de seguridad que supervisa y filtra el tr\u00e1fico de red, permiti\u00e9ndolo o bloque\u00e1ndolo seg\u00fan unas reglas, para proteger la red interna del exterior.\"}},{\"@type\":\"Question\",\"name\":\"\u00bfPara qu\u00e9 sirve un firewall en una empresa?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Para bloquear accesos no autorizados, controlar qu\u00e9 tr\u00e1fico entra y sale, separar zonas de la red y permitir conexiones remotas seguras.\"}},{\"@type\":\"Question\",\"name\":\"\u00bfQu\u00e9 diferencia hay entre un firewall tradicional y uno de nueva generaci\u00f3n?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"El tradicional filtra por puertos, direcciones y protocolos. El de nueva generaci\u00f3n a\u00f1ade inspecci\u00f3n profunda, control de aplicaciones, prevenci\u00f3n de intrusiones y mayor visibilidad.\"}},{\"@type\":\"Question\",\"name\":\"\u00bfUn firewall me protege de todo?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. No sustituye al antivirus, a las copias de seguridad ni a la formaci\u00f3n del equipo, y debe estar bien configurado y actualizado.\"}},{\"@type\":\"Question\",\"name\":\"\u00bfPuede una pyme peque\u00f1a necesitar un firewall profesional?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Depende de lo que dependa del sistema inform\u00e1tico. Si hay servidor, datos de clientes, teletrabajo o varias sedes, un firewall de empresa bien gestionado es muy recomendable.\"}},{\"@type\":\"Question\",\"name\":\"\u00bfCada cu\u00e1nto hay que revisarlo?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Conviene actualizarlo con regularidad y revisar las reglas de forma peri\u00f3dica, porque las que se acumulan sin control abren puertas innecesarias.\"}}]}<\/script>\n\n\n\n<p class=\"has-large-font-size wp-block-paragraph\">La teva oficina t\u00e9 una porta, i tothom ent\u00e9n que alg\u00fa ha de decidir qui entra. Per\u00f2 la teva xarxa tamb\u00e9 t\u00e9 una porta: la connexi\u00f3 a internet. Per all\u00e0 entren els correus, les visites web i els programes que s&#8217;actualitzen, i tamb\u00e9 els intents d&#8217;acc\u00e9s de qui no hi hauria de ser. El tallafoc \u00e9s el porter d&#8217;aquesta porta. Aix\u00f2 \u00e9s el que fa, el que no fa i com saber si el teu est\u00e0 ben posat.<\/p>\n\n\n\n<div style=\"background:#12324f;border-radius:12px;padding:28px 20px;margin:28px 0;\">\r\n<div style=\"display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:center;\">\r\n<div style=\"background:#2a4f73;color:#ffffff;border-radius:10px;padding:18px 22px;text-align:center;min-width:150px;\"><p style=\"margin:0;font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#9fc4e8;\">Fora<\/p><p style=\"margin:6px 0 0;font-size:19px;font-weight:700;color:#ffffff;\">Internet<\/p><\/div>\r\n<div style=\"color:#f0b429;font-size:30px;font-weight:700;\">\u2192<\/div>\r\n<div style=\"background:#f0b429;color:#12324f;border-radius:10px;padding:18px 22px;text-align:center;min-width:170px;\"><p style=\"margin:0;font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;\">Decideix<\/p><p style=\"margin:6px 0 0;font-size:19px;font-weight:800;\">Tallafoc<\/p><\/div>\r\n<div style=\"color:#5fb36b;font-size:30px;font-weight:700;\">\u2192<\/div>\r\n<div style=\"background:#2a4f73;color:#ffffff;border-radius:10px;padding:18px 22px;text-align:center;min-width:150px;\"><p style=\"margin:0;font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#9fc4e8;\">Dins<\/p><p style=\"margin:6px 0 0;font-size:19px;font-weight:700;color:#ffffff;\">La teva xarxa<\/p><\/div>\r\n<\/div>\r\n<p style=\"margin:18px 0 0;text-align:center;font-size:15px;color:#cfe3f5;\">Cada connexi\u00f3 que entra o surt passa pel tallafoc, que la permet o la bloqueja segons unes regles.<\/p>\r\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e8 \u00e9s un tallafoc?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un tallafoc, o firewall, \u00e9s un dispositiu o programa de seguretat que supervisa, filtra i controla el tr\u00e0nsit de xarxa entrant i sortint segons unes regles de seguretat predefinides. El seu prop\u00f2sit principal \u00e9s establir una barrera entre una xarxa interna de confian\u00e7a i les xarxes externes que no ho s\u00f3n, com internet. Pot ser maquinari, programari o una combinaci\u00f3 de tots dos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Com decideix qu\u00e8 deixa passar?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un tallafoc cl\u00e0ssic funciona com un porter amb una llista: per aquesta porta (port) i des d&#8217;aquesta adre\u00e7a, s\u00ed; per aquesta altra, no. Les regles es poden basar en les adreces d&#8217;origen i destinaci\u00f3, els n\u00fameros de port o el tipus de protocol. Aquests s\u00f3n alguns exemples il\u00b7lustratius:<\/p>\n\n\n\n<div style=\"overflow-x:auto;margin:20px 0 28px;\">\r\n<table style=\"width:100%;border-collapse:collapse;font-size:16px;\">\r\n<thead><tr>\r\n<th style=\"background:#1f4e79;color:#fff;text-align:left;padding:10px 14px;\">Qu\u00e8 passa<\/th>\r\n<th style=\"background:#1f4e79;color:#fff;text-align:left;padding:10px 14px;\">Decisi\u00f3 del tallafoc<\/th>\r\n<\/tr><\/thead>\r\n<tbody>\r\n<tr><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;\">Una persona de la teva oficina obre la web d&#8217;un prove\u00efdor.<\/td><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;\"><strong style=\"color:#1e8449;\">Permetre<\/strong><\/td><\/tr>\r\n<tr><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;background:#f7f9fb;\">Un desconegut d&#8217;un altre pa\u00eds intenta connectar-se al teu servidor.<\/td><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;background:#f7f9fb;\"><strong style=\"color:#c0392b;\">Bloquejar<\/strong><\/td><\/tr>\r\n<tr><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;\">Un equip de l&#8217;oficina intenta enviar dades a una adre\u00e7a catalogada com a maliciosa.<\/td><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;\"><strong style=\"color:#c0392b;\">Bloquejar i avisar<\/strong>, si el tallafoc \u00e9s de nova generaci\u00f3<\/td><\/tr>\r\n<tr><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;background:#f7f9fb;\">Un t\u00e8cnic es connecta per VPN amb doble factor.<\/td><td style=\"padding:10px 14px;border-bottom:1px solid #dde3ea;background:#f7f9fb;\"><strong style=\"color:#1e8449;\">Permetre<\/strong>, amb permisos limitats<\/td><\/tr>\r\n<\/tbody><\/table>\r\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Els 4 tipus de tallafoc que conv\u00e9 con\u00e8ixer<\/h2>\n\n\n\n<div style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:20px 0 28px;\">\r\n<div style=\"background:#ffffff;border:1px solid #dde3ea;border-top:4px solid #9aa7b4;border-radius:8px;padding:18px;\"><p style=\"margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#6b7785;\">B\u00e0sic<\/p><p style=\"margin:0 0 8px;font-size:18px;font-weight:700;\">De programari<\/p><p style=\"margin:0;\">Ve integrat al sistema operatiu i protegeix un \u00fanic equip. \u00c9s \u00fatil, per\u00f2 no protegeix tota la xarxa.<\/p><\/div>\r\n<div style=\"background:#ffffff;border:1px solid #dde3ea;border-top:4px solid #1f4e79;border-radius:8px;padding:18px;\"><p style=\"margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#1f4e79;\">Xarxa<\/p><p style=\"margin:0 0 8px;font-size:18px;font-weight:700;\">De maquinari<\/p><p style=\"margin:0;\">\u00c9s un dispositiu f\u00edsic que es col\u00b7loca entre el router i internet i protegeix tota la xarxa de l&#8217;empresa.<\/p><\/div>\r\n<div style=\"background:#ffffff;border:1px solid #dde3ea;border-top:4px solid #2f6fa8;border-radius:8px;padding:18px;\"><p style=\"margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#2f6fa8;\">Tot en un<\/p><p style=\"margin:0 0 8px;font-size:18px;font-weight:700;\">UTM<\/p><p style=\"margin:0;\">Reuneix diverses funcions de seguretat en un sol equip: filtratge, antivirus de xarxa, VPN i m\u00e9s.<\/p><\/div>\r\n<div style=\"background:#ffffff;border:1px solid #dde3ea;border-top:4px solid #1e8449;border-radius:8px;padding:18px;\"><p style=\"margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#1e8449;\">Avan\u00e7at<\/p><p style=\"margin:0 0 8px;font-size:18px;font-weight:700;\">NGFW<\/p><p style=\"margin:0;\">De nova generaci\u00f3: va m\u00e9s enll\u00e0 dels ports i inspecciona aplicacions, usuaris i amenaces.<\/p><\/div>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Un tallafoc de nova generaci\u00f3 (NGFW) pot incloure inspecci\u00f3 profunda del tr\u00e0nsit, control d&#8217;aplicacions, un sistema de prevenci\u00f3 d&#8217;intrusions (IPS), inspecci\u00f3 del tr\u00e0nsit xifrat i segmentaci\u00f3 de xarxa. Aquesta \u00faltima ajuda a separar entorns, usuaris o seus i redueix el risc que un incident s&#8217;estengui dins de l&#8217;empresa. En una pime sol bastar una segmentaci\u00f3 ben feta per zones: usuaris, servidors, telefonia, convidats i gesti\u00f3 inform\u00e0tica.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e8 fa i qu\u00e8 no fa un tallafoc<\/h2>\n\n\n\n<div style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:20px 0 28px;\">\r\n<div style=\"background:#eef8f1;border-left:5px solid #1e8449;border-radius:8px;padding:20px;\">\r\n<p style=\"margin:0 0 8px;font-size:18px;font-weight:700;color:#1e8449;\">S\u00ed que fa<\/p>\r\n<ul style=\"margin:0;padding-left:20px;line-height:1.6;\"><li>Filtra el tr\u00e0nsit que entra i surt de la teva xarxa.<\/li><li>Bloqueja accessos no autoritzats des de l&#8217;exterior.<\/li><li>Separa zones de la xarxa per limitar els danys.<\/li><li>Permet connexions remotes segures amb VPN.<\/li><li>Registra el que passa per detectar anomalies.<\/li><\/ul>\r\n<\/div>\r\n<div style=\"background:#fdf1ef;border-left:5px solid #c0392b;border-radius:8px;padding:20px;\">\r\n<p style=\"margin:0 0 8px;font-size:18px;font-weight:700;color:#c0392b;\">No fa<\/p>\r\n<ul style=\"margin:0;padding-left:20px;line-height:1.6;\"><li>No evita que alg\u00fa obri un arxiu infectat pel seu compte.<\/li><li>No substitueix l&#8217;antivirus, les c\u00f2pies de seguretat ni la formaci\u00f3 de l&#8217;equip.<\/li><li>No arregla contrasenyes febles ni comptes sense doble factor.<\/li><li>No funciona b\u00e9 si ning\u00fa no el revisa ni l&#8217;actualitza.<\/li><\/ul>\r\n<\/div>\r\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Els 6 errors de configuraci\u00f3 m\u00e9s comuns<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Molts tallafocs estan instal\u00b7lats, per\u00f2 mal configurats. Aquests s\u00f3n els errors que m\u00e9s es repeteixen a les pimes:<\/p>\n\n\n\n<div style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;margin:20px 0 28px;\">\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">1<\/span><span><strong>Regles massa permissives.<\/strong> El correcte \u00e9s bloquejar-ho tot i anar habilitant nom\u00e9s el necessari.<\/span><\/div>\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">2<\/span><span><strong>Ports oberts per comoditat.<\/strong> Reenviar ports per donar acc\u00e9s a un equip crea una superf\u00edcie d&#8217;atac enorme.<\/span><\/div>\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">3<\/span><span><strong>VPN amb acc\u00e9s massa ampli.<\/strong> Cada persona hauria de veure nom\u00e9s el que necessita.<\/span><\/div>\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">4<\/span><span><strong>Ning\u00fa controla el tr\u00e0nsit de sortida.<\/strong> Limitar qu\u00e8 pot sortir ajuda a frenar un equip infectat.<\/span><\/div>\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">5<\/span><span><strong>Sense actualitzar i amb regles acumulades.<\/strong> Les versions antigues i les regles que ning\u00fa no revisa obren portes.<\/span><\/div>\r\n<div style=\"display:flex;gap:14px;align-items:flex-start;background:#ffffff;border:1px solid #dde3ea;border-radius:8px;padding:16px;\"><span style=\"flex:0 0 34px;height:34px;border-radius:50%;background:#c0392b;color:#fff;text-align:center;line-height:34px;font-weight:700;\">6<\/span><span><strong>Administraci\u00f3 exposada a internet.<\/strong> El tauler de gesti\u00f3 s&#8217;ha de fer servir des de dins de la xarxa o per VPN.<\/span><\/div>\r\n<\/div>\n\n\n\n<div style=\"background:#fff8e6;border-left:5px solid #e0a100;border-radius:6px;padding:20px 24px;margin:28px 0;\">\r\n<p style=\"margin:0 0 6px;font-size:13px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#8a6200;\">Qu\u00e8 exigir al teu prove\u00efdor<\/p>\r\n<p style=\"margin:0;\">Que el tallafoc bloquegi per defecte, que revisi les regles de manera peri\u00f2dica, que s&#8217;actualitzi amb regularitat, que guardi registres i avisi del que \u00e9s important, i que t&#8217;expliqui amb claredat qui el gestiona i quins canvis s&#8217;han fet.<\/p>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Per a l&#8217;acc\u00e9s remot, consulta el nostre article sobre quan necessita una empresa una VPN. I si et preocupa que ja hagin pogut entrar, repassa els senyals que la teva empresa ha estat hackejada.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Com pot ajudar Epic Solutions?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Epic Solutions \u00e9s una empresa inform\u00e0tica de Reus que presta servei a pimes del Camp de Tarragona. El seu servei de manteniment inclou monitoritzaci\u00f3 cont\u00ednua 24\/7 de servidors i xarxes, vigil\u00e0ncia d&#8217;intrusions, an\u00e0lisi de vulnerabilitats, doble factor d&#8217;autenticaci\u00f3, c\u00f2pies de seguretat automatitzades i suport t\u00e8cnic remot i presencial. Abans de proposar res, l&#8217;equip fa un Diagn\u00f2stic IT B\u00e0sic que avalua la infraestructura, incloses les xarxes, la ciberseguretat i el RGPD, la gesti\u00f3 de la informaci\u00f3 i les possibilitats de millora.<\/p>\n\n\n\n<div style=\"background:#1f4e79;color:#ffffff;border-radius:10px;padding:32px 28px;margin:32px 0;text-align:center;\">\r\n<p style=\"margin:0 0 8px;font-size:22px;font-weight:700;color:#ffffff;\">Saps qui decideix qu\u00e8 entra a la xarxa de la teva empresa?<\/p>\r\n<p style=\"margin:0 0 20px;font-size:16px;color:#ffffff;\">Parla amb el nostre equip t\u00e8cnic. Atenem de dilluns a divendres, de 8:00 a 17:00.<\/p>\r\n<a href=\"tel:+34977756775\" style=\"display:inline-block;background:#ffffff;color:#1f4e79;font-weight:700;text-decoration:none;padding:12px 24px;border-radius:6px;margin:4px 6px;\">Trucar al 977 756 775<\/a>\r\n<a href=\"mailto:comercial@epic.es\" style=\"display:inline-block;background:transparent;color:#ffffff;font-weight:700;text-decoration:none;padding:10px 22px;border-radius:6px;border:2px solid #ffffff;margin:4px 6px;\">Escriure a comercial@epic.es<\/a>\r\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Pots ampliar informaci\u00f3 a la nostra guia de manteniment inform\u00e0tic per a empreses.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Preguntes freq\u00fcents<\/h2>\n\n\n\n<div style=\"margin:16px 0 28px;\">\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Qu\u00e8 \u00e9s un tallafoc?<\/summary><p style=\"margin:12px 0 0;\">\u00c9s un dispositiu o programa de seguretat que supervisa i filtra el tr\u00e0nsit de xarxa, permetent-lo o bloquejant-lo segons unes regles, per protegir la xarxa interna de l&#8217;exterior.<\/p><\/details>\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Per a qu\u00e8 serveix un tallafoc en una empresa?<\/summary><p style=\"margin:12px 0 0;\">Per bloquejar accessos no autoritzats, controlar quin tr\u00e0nsit entra i surt, separar zones de la xarxa i permetre connexions remotes segures.<\/p><\/details>\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Quina difer\u00e8ncia hi ha entre un tallafoc tradicional i un de nova generaci\u00f3?<\/summary><p style=\"margin:12px 0 0;\">El tradicional filtra per ports, adreces i protocols. El de nova generaci\u00f3 afegeix inspecci\u00f3 profunda, control d&#8217;aplicacions, prevenci\u00f3 d&#8217;intrusions i m\u00e9s visibilitat.<\/p><\/details>\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Un tallafoc em protegeix de tot?<\/summary><p style=\"margin:12px 0 0;\">No. No substitueix l&#8217;antivirus, les c\u00f2pies de seguretat ni la formaci\u00f3 de l&#8217;equip, i ha d&#8217;estar ben configurat i actualitzat.<\/p><\/details>\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Una pime petita pot necessitar un tallafoc professional?<\/summary><p style=\"margin:12px 0 0;\">Dep\u00e8n de com en depengui el sistema inform\u00e0tic. Si hi ha servidor, dades de clients, teletreball o diverses seus, un tallafoc d&#8217;empresa ben gestionat \u00e9s molt recomanable.<\/p><\/details>\r\n<details style=\"border:1px solid #dde3ea;border-radius:6px;padding:14px 18px;margin-bottom:10px;\"><summary style=\"cursor:pointer;font-weight:700;\">Cada quant s&#8217;ha de revisar?<\/summary><p style=\"margin:12px 0 0;\">Conv\u00e9 actualitzar-lo amb regularitat i revisar les regles de manera peri\u00f2dica, perqu\u00e8 les que s&#8217;acumulen sense control obren portes innecess\u00e0ries.<\/p><\/details>\r\n<\/div>\n\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"inLanguage\":\"ca\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Qu\u00e8 \u00e9s un tallafoc?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"\u00c9s un dispositiu o programa de seguretat que supervisa i filtra el tr\u00e0nsit de xarxa, permetent-lo o bloquejant-lo segons unes regles, per protegir la xarxa interna de l'exterior.\"}},{\"@type\":\"Question\",\"name\":\"Per a qu\u00e8 serveix un tallafoc en una empresa?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Per bloquejar accessos no autoritzats, controlar quin tr\u00e0nsit entra i surt, separar zones de la xarxa i permetre connexions remotes segures.\"}},{\"@type\":\"Question\",\"name\":\"Quina difer\u00e8ncia hi ha entre un tallafoc tradicional i un de nova generaci\u00f3?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"El tradicional filtra per ports, adreces i protocols. 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El tallafoc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":18379,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[426],"tags":[875,881,925,926,855,933,932,895],"class_list":["post-18376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seguridad-informatica","tag-ciberseguretat","tag-epic-care-it","tag-firewall","tag-ngfw","tag-pimes","tag-segmentacio-de-xarxa","tag-tallafoc","tag-xarxes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Qu\u00e8 \u00e9s un Tallafoc i per a Qu\u00e8 Serveix en una Empresa<\/title>\n<meta name=\"description\" content=\"Qu\u00e8 \u00e9s un tallafoc, per a qu\u00e8 serveix en una empresa, quins tipus hi ha, qu\u00e8 no fa i els 6 errors de configuraci\u00f3 m\u00e9s comuns. 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