{"id":49547,"date":"2025-09-17T18:25:33","date_gmt":"2025-09-17T18:25:33","guid":{"rendered":"https:\/\/becolve.com\/blog\/5-recomendacoes-para-a-implementacao-de-redes-ot-seguras-parte-i\/"},"modified":"2025-09-17T18:25:33","modified_gmt":"2025-09-17T18:25:33","slug":"5-recomendacoes-para-a-implementacao-de-redes-ot-seguras-parte-i","status":"publish","type":"blog","link":"https:\/\/becolve.com\/pt-pt\/blog\/5-recomendacoes-para-a-implementacao-de-redes-ot-seguras-parte-i\/","title":{"rendered":"5 recomenda\u00e7\u00f5es para a implementa\u00e7\u00e3o de Redes OT seguras (Parte I)"},"content":{"rendered":"<p>O surgimento de diferentes formas de <strong>ciberterrorismo e cibercrime<\/strong>, a prolifera\u00e7\u00e3o do acesso web aos sistemas <strong>SCADA<\/strong>, a normaliza\u00e7\u00e3o de <strong>tecnologias de TI<\/strong> no \u00e2mbito industrial e a ado\u00e7\u00e3o dos paradigmas <strong>cloud, m\u00f3vel e BYOD<\/strong> exigem uma aten\u00e7\u00e3o especial \u00e0 <strong>implementa\u00e7\u00e3o segura nas redes OT<\/strong> (Operation Technology) das tecnologias fornecidas pelos principais fabricantes de PLCs e SCADA (<strong>Wonderware<\/strong>, Siemens, Rockwell, Schneider, etc.).<\/p>\n<p>Embora muitas destas tecnologias sejam \u201c<strong><a title=\"Seguro por Design\" href=\"http:\/\/www.ciberseguridadlogitek.com\/servicios\/secure-by-design\/\" target=\"_blank\" rel=\"noopener\">seguras por design<\/a><\/strong>\u201d, isso n\u00e3o garante a prote\u00e7\u00e3o contra a grande quantidade de amea\u00e7as que surgem atualmente em ambientes industriais e de infraestruturas.<\/p>\n<p>Numa s\u00e9rie de publica\u00e7\u00f5es, queremos propor at\u00e9 <strong>cinco recomenda\u00e7\u00f5es<\/strong> que lhe permitir\u00e3o dotar de maior seguran\u00e7a uma <strong>rede OT<\/strong>:<\/p>\n<h4>1. Utilize sempre que poss\u00edvel switches industriais ger\u00edveis.<\/h4>\n<p>O <strong>MTBF<\/strong> destes switches \u00e9 muito superior ao dos switches transacionais, o facto de serem ger\u00edveis permitir-lhes-\u00e1 maior flexibilidade na sua configura\u00e7\u00e3o e podem ser fornecidos com <strong>caracter\u00edsticas especiais para ambientes espec\u00edficos<\/strong> (carril DIN, IP20, IP67, alta disponibilidade, redund\u00e2ncia, aprova\u00e7\u00f5es espec\u00edficas como a IEC61850, protocolos industriais como Profibus ou EhternetIP, etc.).<\/p>\n<h4>2. Segmente fisicamente a rede de TI e a rede OT onde as tecnologias de tempo real (PLCs, SCADA, HMI, etc.) foram instaladas utilizando firewalls\/routers industriais.<\/h4>\n<p>Na figura, pode observar-se como o dispositivo <strong>Firewall\/Router separa dois segmentos de rede<\/strong> (a rede A ou TI com intervalo de endere\u00e7os IP 192.168.1.X e a rede B ou OT com intervalo de endere\u00e7os IP 193.167.1.X). Al\u00e9m de separar ambas as redes, o dispositivo atua como firewall <strong>bloqueando o tr\u00e1fego n\u00e3o permitido<\/strong> entre ambos os segmentos de rede.<br \/>\nNormalmente, este tipo de mecanismo de segmenta\u00e7\u00e3o pode ser configurado para realizar <strong>NAT<\/strong> (Network Address Translation) 1:1, ou seja, os equipamentos localizados na rede de TI <strong>s\u00f3 veem o endere\u00e7o IP<\/strong> da placa de rede do router que comunica com os equipamentos localizados na rede OT, aumentando assim a seguran\u00e7a no tr\u00e2nsito de informa\u00e7\u00f5es entre ambas as redes. <\/p>\n<p style=\"color: #666666;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1410\" src=\"https:\/\/becolve.com\/wp-content\/uploads\/2023\/04\/image001.jpg\" alt=\"Redes OT seguras\" width=\"414\" height=\"284\"><\/p>\n<h4>3. Evite utilizar VLAN para separar TI e OT.<\/h4>\n<p>Se o fizer dentro do pr\u00f3prio ambiente OT, <strong>n\u00e3o realize \u201ctruncking\u201d<\/strong> entre switches para comunicar equipamentos servidores e clientes. Se, por necessidades muito espec\u00edficas, tiver de o fazer, <strong>filtre o tr\u00e1fego entre switches\/VLAN<\/strong> utilizando firewalls industriais compat\u00edveis com o padr\u00e3o IEEE 802.1Q <\/p>\n<p style=\"color: #666666;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1411\" src=\"https:\/\/becolve.com\/wp-content\/uploads\/2023\/04\/image002.jpg\" alt=\"5 recomenda\u00e7\u00f5es Redes OT seguras\" width=\"353\" height=\"181\"><\/p>\n<p>Na pr\u00f3xima publica\u00e7\u00e3o, proporemos outras <strong>duas recomenda\u00e7\u00f5es<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O surgimento de diferentes formas de ciberterrorismo e cibercrime, a prolifera\u00e7\u00e3o do acesso web aos sistemas SCADA, a normaliza\u00e7\u00e3o de tecnologias de TI no \u00e2mbito industrial e a ado\u00e7\u00e3o dos paradigmas cloud, m\u00f3vel e BYOD exigem uma aten\u00e7\u00e3o especial \u00e0 implementa\u00e7\u00e3o segura nas redes OT (Operation Technology) das tecnologias fornecidas pelos principais fabricantes de PLCs [&hellip;]<\/p>\n","protected":false},"author":31,"featured_media":49550,"menu_order":0,"template":"","categories":[969],"tags":[],"arquitectura":[1838],"area":[],"sector":[],"experto":[203],"weborigen":[157],"productos-tax":[],"soluciones-tax":[],"marcas-tax":[],"coauthors":[],"class_list":["post-49547","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-ciberseguranca","arquitectura-ciberseguranca-industrial","experto-ciberseguranca-industrial-disponibilidade-total","weborigen-ciberseguridadlogitek-com"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>5 recomenda\u00e7\u00f5es para a implementa\u00e7\u00e3o de Redes OT seguras (Parte I) | Becolve Digital<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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