{"id":641,"date":"2006-03-20T06:00:00","date_gmt":"2006-03-20T06:00:00","guid":{"rendered":"http:\/\/markwilson.me.uk\/blog\/2006\/03\/osi-reference-model-and-how-it-relates.htm"},"modified":"2007-03-09T14:59:06","modified_gmt":"2007-03-09T14:59:06","slug":"osi-reference-model-and-how-it-relates","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2006\/03\/osi-reference-model-and-how-it-relates.htm","title":{"rendered":"The OSI reference model and how it relates to TCP\/IP"},"content":{"rendered":"<p><!--114543964831736304-->Earlier today, whilst on a client site, waiting for a PC to rebuild (5 times &#8211; and I thought my desktop support days were over&#8230; maybe that&#8217;s why they should be&#8230;), I saw a diagram of the <a href=\"http:\/\/en.wikipedia.org\/wiki\/OSI_reference_model\">open systems interconnection (OSI) reference model<\/a> pinned up above a desk.  I&#8217;ve seen many OSI model representations over the years, but this one was probably the clearest example I&#8217;ve seen in a while (especially for <a href=\"http:\/\/en.wikipedia.org\/wiki\/TCPIP\">TCP\/IP<\/a>), so I&#8217;ve reproduced it here:<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/osi.png?ssl=1\" target=\"_blank\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/images\/thumbnails\/osi.png?w=700&#038;ssl=1\" alt=\"MOM 2005 architecture\" border=\"0\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Earlier today, whilst on a client site, waiting for a PC to rebuild (5 times &#8211; and I thought my desktop support days were over&#8230; maybe that&#8217;s why they should be&#8230;), I saw a diagram of the open systems interconnection (OSI) reference model pinned up above a desk. I&#8217;ve seen many OSI model representations over &hellip; <a href=\"https:\/\/www.markwilson.co.uk\/blog\/2006\/03\/osi-reference-model-and-how-it-relates.htm\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">The OSI reference model and how it relates to TCP\/IP<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[45],"class_list":["post-641","post","type-post","status-publish","format-standard","hentry","tag-tcpip"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The OSI reference model and how it relates to TCP\/IP - markwilson.it<\/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:\/\/www.markwilson.co.uk\/blog\/2006\/03\/osi-reference-model-and-how-it-relates.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The OSI reference model and how it relates to TCP\/IP - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"Earlier today, whilst on a client site, waiting for a PC to rebuild (5 times &#8211; and I thought my desktop support days were over&#8230; maybe that&#8217;s why they should be&#8230;), I saw a diagram of the open systems interconnection (OSI) reference model pinned up above a desk. I&#8217;ve seen many OSI model representations over &hellip; Continue reading The OSI reference model and how it relates to TCP\/IP\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2006\/03\/osi-reference-model-and-how-it-relates.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2006-03-20T06:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2007-03-09T14:59:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.markwilson.co.uk\/blog\/images\/thumbnails\/osi.png\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"The OSI reference model and how it relates to TCP\\\/IP\",\"datePublished\":\"2006-03-20T06:00:00+00:00\",\"dateModified\":\"2007-03-09T14:59:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm\"},\"wordCount\":93,\"commentCount\":3,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/thumbnails\\\/osi.png\",\"keywords\":[\"TCP\\\/IP\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm\",\"name\":\"The OSI reference model and how it relates to TCP\\\/IP - markwilson.it\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/thumbnails\\\/osi.png\",\"datePublished\":\"2006-03-20T06:00:00+00:00\",\"dateModified\":\"2007-03-09T14:59:06+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#primaryimage\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/thumbnails\\\/osi.png\",\"contentUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/thumbnails\\\/osi.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2006\\\/03\\\/osi-reference-model-and-how-it-relates.htm#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The OSI reference model and how it relates to TCP\\\/IP\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/\",\"name\":\"markwilson.it\",\"description\":\"get-info -class technology | write-output &gt; 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This Month's offer is Windows Server 2008 TCP\/IP Protocols and Services by Joseph Davies and, although I haven't read it yet, I probably will (at least in part) as the TCP\/IP stack has changed considerably\u2026","rel":"","context":"In \"Microsoft\"","block_context":{"text":"Microsoft","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/microsoft"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":420,"url":"https:\/\/www.markwilson.co.uk\/blog\/2004\/09\/useful-tcp-and-udp-port-numbers.htm","url_meta":{"origin":641,"position":3},"title":"Useful TCP and UDP port numbers","author":"Mark Wilson","date":"Wednesday 15 September 2004","format":false,"excerpt":"Having spent the afternoon configuring Windows Firewall exceptions, I thought I'd post some links to useful port number information. 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