{"id":49095,"date":"2025-09-17T18:17:51","date_gmt":"2025-09-17T18:17:51","guid":{"rendered":"https:\/\/becolve.com\/blog\/segmentacao-e-fortificacao-de-redes-ot-o-diodo-de-dados\/"},"modified":"2025-09-17T18:17:51","modified_gmt":"2025-09-17T18:17:51","slug":"segmentacao-e-fortificacao-de-redes-ot-o-diodo-de-dados","status":"publish","type":"blog","link":"https:\/\/becolve.com\/pt-pt\/blog\/segmentacao-e-fortificacao-de-redes-ot-o-diodo-de-dados\/","title":{"rendered":"Segmenta\u00e7\u00e3o e fortifica\u00e7\u00e3o de redes OT: O d\u00edodo de dados"},"content":{"rendered":"<p>A incorpora\u00e7\u00e3o de dispositivos que fortifiquem o acesso perimetral e a correta segmenta\u00e7\u00e3o de redes \u00e9 uma das contramedidas b\u00e1sicas que devem ser consideradas dentro de uma estrat\u00e9gia de defesa em profundidade.<\/p>\n<p><strong>Por que \u00e9 t\u00e3o importante a fortifica\u00e7\u00e3o de redes?<\/strong><\/p>\n<p>O facto de carecer de dispositivos que permitam o acesso seguro \u00e0 rede OT, n\u00e3o os configurar corretamente, implement\u00e1-los com configura\u00e7\u00f5es por defeito e\/ou a falta de pol\u00edticas de segmenta\u00e7\u00e3o de rede, faz com que os equipamentos, processos e sistemas localizados no ambiente de opera\u00e7\u00f5es sejam mais vulner\u00e1veis a amea\u00e7as tanto externas como internas.<\/p>\n<p>Tendo em conta a arquitetura de rede existente em cada f\u00e1brica e a criticidade dos processos, <strong>devem ser adotadas as solu\u00e7\u00f5es de segmenta\u00e7\u00e3o e fortifica\u00e7\u00e3o mais apropriadas.<\/strong> Em qualquer caso, considerando a idiossincrasia dos ambientes OT e para aumentar a seguran\u00e7a das suas redes industriais, \u00e9 imprescind\u00edvel auditar o seu estado; inventariando os dispositivos que se conectam a elas, identificando os meios atrav\u00e9s dos quais s\u00e3o acess\u00edveis e analisando o seu grau de segmenta\u00e7\u00e3o.<\/p>\n<div class=\"desc\">\n<p>Uma das ferramentas mais usadas para a fortifica\u00e7\u00e3o de redes \u00e9 <strong>o d\u00edodo de dados.<\/strong> Trata-se de um dispositivo hardware (n\u00e3o existe firmware como o caso das firewalls) que separa\/protege duas redes assegurando a unidirecionalidade no fluxo de informa\u00e7\u00e3o, garantindo que a informa\u00e7\u00e3o de uma rede chegue a outra rede (mas n\u00e3o vice-versa). \u00c9 altamente recomend\u00e1vel para ambientes realmente cr\u00edticos nos quais \u00e9 necess\u00e1rio dotar as infraestruturas de um n\u00edvel de seguran\u00e7a quase inexpugn\u00e1vel. <\/p>\n<p>Entre as alternativas a ter em conta encontra-se o <strong>d\u00edodo de dados da FOX IT:<\/strong> \u00e9 composto por um hardware que garante a unidirecionalidade no tr\u00e2nsito de informa\u00e7\u00e3o (atrav\u00e9s de transceetores de fibra \u00f3tica) e por dois servidores (denominados proxies). Estes incorporam aplica\u00e7\u00f5es espec\u00edficas para transmitir unidirecionalmente a informa\u00e7\u00e3o que \u00e9 gerida em infraestruturas cr\u00edticas e em ambientes industriais sobre protocolos como Modbus ou OPC, ou que \u00e9 armazenada sobre bases de dados industriais como OSIsoft PI ou Wonderware Historian. <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1916\" src=\"https:\/\/becolve.com\/wp-content\/uploads\/2023\/04\/diodo-de-datos.png\" alt=\"d\u00edodo-de-dados\" width=\"800\" height=\"300\"><\/p>\n<p><strong>A chave deste d\u00edodo de dados<\/strong> reside em que \u00e9 capaz de interpretar <strong>protocolos bidirecionais (t\u00edpico, TCP, que requer o handshaking de tr\u00eas vias<\/strong>), \u201cquebr\u00e1-los\u201d e convert\u00ea-los em unidirecionais (entre os proxies e o hardware do d\u00edodo) para depois apresent\u00e1-los na rede n\u00e3o comprometida de novo como bidirecionais.<\/p>\n<p>Para ter uma informa\u00e7\u00e3o mais precisa e completa sobre o funcionamento deste <strong>d\u00edodo de dados, a FoxIT <\/strong>organizou o webinar <strong>\u2018Seamless integration of Active Directory with the Fox DataDiode!\u2019 para o pr\u00f3ximo dia 29 de mar\u00e7o. <\/strong>Pode aceder ao formul\u00e1rio do mesmo a partir da seguinte <a title=\"FoxIT webinar\" href=\"https:\/\/www.brighttalk.com\/webcast\/12283\/197351\" target=\"_blank\" rel=\"noopener\">liga\u00e7\u00e3o<\/a>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5597\" src=\"https:\/\/becolve.com\/wp-content\/uploads\/2023\/04\/FDD-Use-Case-Tour-calendar.png\" alt=\"FDD Use Case Tour calendar\" width=\"800\" height=\"551\"><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A incorpora\u00e7\u00e3o de dispositivos que fortifiquem o acesso perimetral e a correta segmenta\u00e7\u00e3o de redes \u00e9 uma das contramedidas b\u00e1sicas que devem ser consideradas dentro de uma estrat\u00e9gia de defesa em profundidade. O d\u00edodo de dados \u00e9 um deles&#8230; <\/p>\n","protected":false},"author":31,"featured_media":49098,"menu_order":0,"template":"","categories":[969],"tags":[],"arquitectura":[1838],"area":[],"sector":[],"experto":[203],"weborigen":[157],"productos-tax":[159],"soluciones-tax":[227],"marcas-tax":[],"coauthors":[],"class_list":["post-49095","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-ciberseguranca","arquitectura-ciberseguranca-industrial","experto-ciberseguranca-industrial-disponibilidade-total","weborigen-ciberseguridadlogitek-com","productos-tax-datadiodes","soluciones-tax-secure-channel-communications-pt-pt"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Segmenta\u00e7\u00e3o e fortifica\u00e7\u00e3o de redes OT: O d\u00edodo de dados | Becolve Digital<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/becolve.com\/pt-pt\/blog\/segmentacao-e-fortificacao-de-redes-ot-o-diodo-de-dados\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Segmenta\u00e7\u00e3o e fortifica\u00e7\u00e3o de redes OT: O d\u00edodo de dados | Becolve Digital\" \/>\n<meta property=\"og:description\" content=\"A incorpora\u00e7\u00e3o de dispositivos que fortifiquem o acesso perimetral e a correta segmenta\u00e7\u00e3o de redes \u00e9 uma das contramedidas b\u00e1sicas que devem ser consideradas dentro de uma estrat\u00e9gia de defesa em profundidade. 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