{"id":9937,"date":"2023-02-17T11:32:09","date_gmt":"2023-02-17T11:32:09","guid":{"rendered":"https:\/\/www.novotek.com\/no\/?p=9937"},"modified":"2023-02-20T09:20:06","modified_gmt":"2023-02-20T09:20:06","slug":"windows-dcom-oppdatering-dette-innebaerer-det-for-deg","status":"publish","type":"post","link":"https:\/\/www.novotek.com\/no\/nyheter\/windows-dcom-oppdatering-dette-innebaerer-det-for-deg\/","title":{"rendered":"Windows DCOM-oppdatering: Dette inneb\u00e6rer det for deg"},"content":{"rendered":"<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"299\" src=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/Microsoft_Update_header-1024x299.png\" alt=\"DCOM-oppdatering\" class=\"wp-image-10001\" srcset=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/Microsoft_Update_header-1024x299.png 1024w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/Microsoft_Update_header-300x88.png 300w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/Microsoft_Update_header-768x224.png 768w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/Microsoft_Update_header.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Den siste fasen av <strong><a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/kb5004442-manage-changes-for-windows-dcom-server-security-feature-bypass-cve-2021-26414-f1400b52-c141-43d2-941e-37ed901c769c\" target=\"_blank\" rel=\"noreferrer noopener\">Windows-sikkerhetsoppdateringen&nbsp;KB500442<\/a><\/strong>&nbsp;trer i kraft 14. mars. Med oppdateringen kan ikke DCOM-herdinger lenger omg\u00e5s. Dette kan f\u00f8re til at forbindelser som er etablert med klassiske OPC-protokoller brytes, og dataoverf\u00f8ring mellom ulike systemer avbrytes. I denne artikkelen forklarer vi n\u00e6rmere i hvilke tilfeller det m\u00e5 iverksettes tiltak, og hvordan dataoverf\u00f8ringen kan fortsettes.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\" id=\"h-bakgrunnen-for-dcom-oppdatering-i-korte-trekk\" style=\"font-size:32px\">Bakgrunnen for DCOM-oppdatering<br>i korte trekk<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>DCOM (Distributed Component Object Model) har v\u00e6rt i bruk siden 1996. Det er en teknologi patentert av Microsoft, for kommunikasjon mellom programvare-komponenter i nettverksenheter. I juni 2021 ble en sikkerhetss\u00e5rbarhet (<strong><a href=\"https:\/\/msrc.microsoft.com\/update-guide\/vulnerability\/CVE-2021-26414\">CVE-2021-26414<\/a><\/strong>) oppdaget i Microsoft Windows-operativsystemer. I s\u00e5rbarheten ble DCOM avsl\u00f8rt som en vanlig angrepsvektor for hackere. Industrielle automasjonssystemer benytter seg i stor grad av DCOM-protokollen, og har derfor behov for endringer.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Windows har gitt ut sikkerhetsoppdateringer for den nevnte s\u00e5rbarheten. Imidlertid vil ikrafttredelsen av DCOM-forbedringene f\u00f8re til kompatibilitetsproblemer mellom ulike automasjonssystemer. For eksempel kan kommunikasjon mellom PLS-er blir forstyrret. P\u00e5 grunn av kompatibilitetsproblemer ble forbedringene implementert i etapper, for \u00e5 gi brukerne tid til \u00e5 forberede seg p\u00e5 endringen.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\" style=\"font-size:26px\">Tidslinje over DCOM-herdinger<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-background\" style=\"background-color:#f8f8f8\"><strong>8. juni 2021<\/strong><br>Herdinger deaktivert som standard, aktiveres via konfigurasjon.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-background\" style=\"background-color:#f8f8f8\"><strong>14. juni 2022<\/strong><br>Herdinger aktivert som standard, overstyring mulig med konfigurasjon.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-background\" style=\"background-color:#f8f8f8\"><strong>14. mars 2023<\/strong><br>Herdinger aktivert som standard. Herdinger kan ikke hoppes over.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\">Hva inneb\u00e6rer dette?<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Applikasjoner som kommuniserer ved hjelp av DCOM vil bli p\u00e5virket. Dette inkluderer applikasjoner p\u00e5 Windows-operativsystemer som bruker klassiske OPC-standarder for dataoverf\u00f8ring mellom ulike servere. Illustrasjonen nedenfor (Figur 1) viser en situasjon som krever endringer:&nbsp;<\/p>\n<\/div>\n\n<div class=\"wp-block-image\"><div class=\"container-md image  aligncenter\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur1-1024x644.png\" alt=\"DCOM s\u00e5rbarhet arkitektur - figur 1\" class=\"wp-image-9939\" width=\"512\" height=\"322\" srcset=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur1-1024x644.png 1024w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur1-300x189.png 300w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur1-768x483.png 768w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur1.png 1500w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div><\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-small-font-size\">Figur 1: En situasjon som krever endringer, dataflyt kan bli avbrutt mellom klient og server.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Forbindelsen mellom Windows-klienten og serveren er ikke sikker, og forbindelsen vil bli brutt n\u00e5r herdingen trer i kraft. Klassisk OPC-klient inne p\u00e5 serveren vil fortsette \u00e5 fungere etter forbedringene trer i kraft, fordi den ikke bruker DCOM-tilkoblingen.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\" style=\"font-size:26px\">Hvordan vet du at systemet ditt bruker<br>DCOM-tilkoblinger?&nbsp;<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Hvis du ikke er sikker p\u00e5 om det er DCOM-implementeringer i operativ bruk i bedriften din, anbefales det \u00e5 skanne nettverket for DCOM-bruk. Du kan ogs\u00e5 be en ekstern ekspert om hjelp, for eksempel oss i Novotek.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\" style=\"font-size:26px\">Hvordan kan dataoverf\u00f8ringen fortsette?<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Korrigerende tiltak inneb\u00e6rer \u00e5 endre den klassiske OPC-serveren til \u00e5 bruke OPC UA (figur 2), eller \u00e5 lage OPC UA Tunneling (figur 3 og 4). Konvertering av en klassisk OPC-server til OPC UA er en enkel m\u00e5te \u00e5 modernisere systemet p\u00e5. Tunneling er n\u00f8dvendig n\u00e5r klienten og\/eller serveren ikke st\u00f8tter OPC UA. Tunneling kan for eksempel gj\u00f8res ved hjelp av&nbsp;<strong><a href=\"https:\/\/www.novotek.com\/no\/automasjon\/opc-industriell-kommunikasjon\/kepserverex\/\">KEPServerEX<\/a><\/strong>.<\/p>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_2-1024x676.png\" alt=\"DCOM OPC UA figur 2\" class=\"wp-image-9963\" width=\"512\" height=\"338\" srcset=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_2-1024x676.png 1024w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_2-300x198.png 300w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_2-768x507.png 768w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_2.png 1500w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-small-font-size\">Figur 2: OPC Classic er erstattet av OPC UA.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_3-1024x720.png\" alt=\"DCOM figur tunneling\" class=\"wp-image-9975\" width=\"512\" height=\"360\" srcset=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_3-1024x720.png 1024w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_3-300x211.png 300w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_3-768x540.png 768w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_3.png 1500w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-small-font-size\">Figur 3: OPC UA tunneling hvis serveren ikke st\u00f8tter OPC UA.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_4__-1024x728.png\" alt=\"DCOM figur tunneling\" class=\"wp-image-10013\" width=\"512\" height=\"364\" srcset=\"https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_4__-1024x728.png 1024w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_4__-300x213.png 300w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_4__-768x546.png 768w, https:\/\/www.novotek.com\/no\/wp-content\/uploads\/sites\/5\/Nyheter\/Informasjon\/DCOM_2023\/DCOM_figur_4__.png 1500w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p class=\"has-small-font-size\">Figur 4: OPC UA tunneling hvis serveren og klienten ikke st\u00f8tter OPC UA.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\">Oppsummering<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>14. mars vil Windows utf\u00f8re den siste fasen av sikkerhetsoppdateringen hvor DCOM-herding trer i kraft som standard, og du vil ikke lenger kunne omg\u00e5 den. Oppdateringen p\u00e5virker dataflyten til industrielle automasjonssystemer som overf\u00f8rer data mellom ulike servere ved hjelp av DCOM-tilkobling. Herdingene har ingen innvirkning p\u00e5 driften av OPC UA, men p\u00e5 eldre, klassiske OPC-standarder. Vi anbefaler p\u00e5 det sterkeste \u00e5 erstatte OPC Classic-tilkoblinger med OPC UA-tilkoblinger. OPC UA er en moderne og sikker m\u00e5te \u00e5 skape forbindelser mellom ulike systemer.&nbsp;<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\" style=\"font-size:32px\">Trenger du hjelp med \u00e5 h\u00e5ndtere DCOM-oppdateringen? <\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Vi har lang erfaring med dataoverf\u00f8ringsprosjekter, og hjelper deg gjerne i gang med en OPC UA-l\u00f8sning. Ta kontakt med oss p\u00e5 info.norway@novotek.com eller via knappen nedenfor hvis du har sp\u00f8rsm\u00e5l om DCOM-oppdateringen eller vil diskutere mulige l\u00f8sninger for din bedrift.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:5px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md buttons  \">\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\"><div class=\"container-md button  aligncenter\">\n<div class=\"wp-block-button aligncenter\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.novotek.com\/no\/contact-us\/\" style=\"background-color:#e70029\">Kontakt oss<\/a><\/div>\n<\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Den siste fasen av Windows-sikkerhetsoppdateringen\u00a0KB500442\u00a0trer i kraft 14. mars. Med oppdateringen kan ikke DCOM-herdinger lenger omg\u00e5s. Les mer om endringene her.<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"9116,8913,3504,4519,8959,3487","_relevanssi_noindex_reason":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-9937","post","type-post","status-publish","format-standard","hentry","category-informasjon"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Windows DCOM-oppdatering: Dette inneb\u00e6rer det for deg - Novotek Norge<\/title>\n<meta name=\"description\" content=\"Den siste fasen av Windows-sikkerhetsoppdateringen\u00a0KB500442\u00a0trer i kraft 14. mars. 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