{"id":10705,"date":"2026-09-16T16:13:55","date_gmt":"2026-09-16T14:13:55","guid":{"rendered":"https:\/\/www.b2c-engineering.com\/?p=10705"},"modified":"2026-09-16T18:22:19","modified_gmt":"2026-09-16T16:22:19","slug":"ot-network-segmentation","status":"publish","type":"post","link":"https:\/\/www.b2c-engineering.com\/en\/ot-network-segmentation\/","title":{"rendered":"OT Network Segmentation: Where Should You Start?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"10705\" class=\"elementor elementor-10705 elementor-10704\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5684664 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5684664\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-08c5fff\" data-id=\"08c5fff\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-be63021 elementor-widget elementor-widget-text-editor\" data-id=\"be63021\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">Segmenting an OT network helps limit communications between different industrial environments and reduces the potential spread of an attack.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">On paper, the principle seems straightforward. In the field, it is a different story.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Existing industrial environments often include several generations of equipment, architectures that have evolved through successive projects, and communication flows whose purpose is no longer fully documented.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Before changing the network architecture, one question should therefore be asked: <strong><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">Do you really know what is happening on your OT network?<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7cf99bc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7cf99bc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6c6deff\" data-id=\"6c6deff\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4c988ee elementor-widget elementor-widget-heading\" data-id=\"4c988ee\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">7 steps for OT network segmentation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ed701ef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ed701ef\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-560d312\" data-id=\"560d312\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9d03497 elementor-widget elementor-widget-progress\" data-id=\"9d03497\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-9d03497\">\n\t\t\t\t1. Start by understanding your OT environment\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-9d03497\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"10\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"10\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">10%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bfd9c37 elementor-widget elementor-widget-text-editor\" data-id=\"bfd9c37\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\"><strong>It is impossible to segment a network properly if you do not know what it contains.<\/strong><\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">The first step is to create an inventory of the equipment present in the environment:<\/p><ul class=\"PSWZZq_List\" data-d-component=\"list\" data-d-marker=\"bullet\" data-d-marker-layout=\"native\"><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">PLCs and control systems<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">SCADA and HMI systems<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Industrial servers<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Engineering and maintenance workstations<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Network equipment<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Monitoring and historian systems<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Connections to the IT network<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Remote access connections<\/p><\/div><\/div><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-808fe6a elementor-widget elementor-widget-text-editor\" data-id=\"808fe6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">This mapping must go beyond a simple list of assets. You also need to understand<strong> <span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">how these assets are connected to one another<\/span><\/strong>.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">A network diagram can provide <strong>an initial overview of the architecture<\/strong>. However, it does not necessarily show which communications are actually taking place.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4a0a578 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4a0a578\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-81c7f96\" data-id=\"81c7f96\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-769fa08 elementor-widget elementor-widget-progress\" data-id=\"769fa08\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-769fa08\">\n\t\t\t\t2. Identify the communication flows between assets\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-769fa08\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"25\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"25\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">25%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b20fe97 elementor-widget elementor-widget-text-editor\" data-id=\"b20fe97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\"><strong>This is one of the most important steps before implementing segmentation.<\/strong><\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">For each communication, you should be able to answer a few questions:<\/p><ol class=\"PSWZZq_List\" data-d-component=\"list\" data-d-marker=\"bullet\" data-d-marker-layout=\"native\"><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Which asset is communicating with which other asset?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Which protocol is being used?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Why is this communication necessary?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">How often does it occur?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Is it essential to production?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">What would happen if it were blocked?<\/p><\/div><\/div><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3f71bd elementor-widget elementor-widget-text-editor\" data-id=\"f3f71bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">This analysis helps distinguish <strong>necessary communications<\/strong> from flows that no longer have a clear operational justification. It can also reveal <strong>dependencies that are not always visible<\/strong> in the theoretical network architecture.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f3d70c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f3d70c8\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-3da378e\" data-id=\"3da378e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8a35387 elementor-widget elementor-widget-progress\" data-id=\"8a35387\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-8a35387\">\n\t\t\t\t3. Define consistent network zones\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-8a35387\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"40\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"40\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">40%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dbb59eb elementor-widget elementor-widget-text-editor\" data-id=\"dbb59eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\"><strong>Once the assets and communication flows have been identified, you can start considering how to organise the network.<\/strong><br \/>The aim is not necessarily to isolate every individual asset. Instead, systems with similar characteristics or security requirements should be grouped together.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">For example, the architecture <strong>could distinguish between:<\/strong><br \/><strong><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">IT network \u2192 Industrial DMZ \u2192 Supervisory network \u2192 Production zones or cells<\/span><\/strong><\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">This approach can be structured around the principles of the <strong><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">ISA\/IEC 62443<\/span> standard<\/strong>, particularly the concepts of zones and conduits. However, segmentation must always take the actual architecture of the installation and its operational constraints into account.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-492d2ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"492d2ea\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-d041e82\" data-id=\"d041e82\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d6b39c2 elementor-widget elementor-widget-progress\" data-id=\"d6b39c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-d6b39c2\">\n\t\t\t\t4. Determine which communications should be allowed\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-d6b39c2\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"55\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"55\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">55%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4122ad elementor-widget elementor-widget-text-editor\" data-id=\"e4122ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\"><strong>Once the zones have been defined, the next step is to determine what can be exchanged between them.<\/strong><br \/>A communication should not automatically be considered legitimate simply because it already exists.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">For each flow, you should be able to justify:<\/p><ul class=\"PSWZZq_List\" data-d-component=\"list\" data-d-marker=\"bullet\" data-d-marker-layout=\"native\"><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Its source<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Its destination<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Its protocol<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Its purpose<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Its level of criticality<\/p><\/div><\/div><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d1b006c elementor-widget elementor-widget-text-editor\" data-id=\"d1b006c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">Filtering rules can then be defined accordingly, particularly at the level of industrial firewalls.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">This makes it possible to move from segmentation based on the network structure to <strong>segmentation based on <span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">actual communication requirements<\/span><\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-b31f646 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b31f646\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-61466f7\" data-id=\"61466f7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-83c6dcf elementor-widget elementor-widget-progress\" data-id=\"83c6dcf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-83c6dcf\">\n\t\t\t\t5. Consider IT\/OT connections and remote access\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-83c6dcf\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"70\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"70\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">70%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c32979 elementor-widget elementor-widget-text-editor\" data-id=\"6c32979\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\"><strong>Segmentation does not only concern equipment located on the shop floor.<br \/><\/strong>Connections between IT and OT networks must also be analysed, as well as access used by maintenance teams, system integrators and suppliers.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">For each access point, it is useful to determine:<\/p><ul class=\"PSWZZq_List\" data-d-component=\"list\" data-d-marker=\"bullet\" data-d-marker-layout=\"native\"><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Who can connect?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">From which environment?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">To which assets?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">With which permissions?<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Under which conditions?<\/p><\/div><\/div><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ef6a2e elementor-widget elementor-widget-text-editor\" data-id=\"5ef6a2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">A remote connection required for maintenance can represent a <strong>significant security weakness<\/strong> if it is not properly controlled.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-02ec645 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"02ec645\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ec35560\" data-id=\"ec35560\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aff896f elementor-widget elementor-widget-progress\" data-id=\"aff896f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-aff896f\">\n\t\t\t\t6. Deploy segmentation progressively\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-aff896f\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"85\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"85\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">85%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddc746e elementor-widget elementor-widget-text-editor\" data-id=\"ddc746e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">In an industrial environment, changing the network architecture involves one essential constraint: <strong><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">Production must continue to operate.<\/span><\/strong><\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">A complete segmentation strategy does not necessarily have to be deployed all at once.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">A progressive approach makes it possible to:<\/p><ol class=\"PSWZZq_List\" data-d-component=\"list\" data-d-marker=\"number\" data-d-marker-layout=\"native\"><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Map the environment<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Analyse communication flows<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Define network zones<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Identify priorities<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Test changes within a controlled scope<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Gradually deploy segmentation rules<\/p><\/div><\/div><\/li><li class=\"PSWZZq_Item\" data-d-component=\"list-item\" data-d-marker-layout=\"native\"><div class=\"PSWZZq_Content\"><div class=\"PSWZZq_Label\"><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Check their impact on operations<\/p><\/div><\/div><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bad4402 elementor-widget elementor-widget-text-editor\" data-id=\"bad4402\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3275\" data-end=\"3389\">This approach also allows you to start with the environments or flows presenting the most significant risks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4b16dad elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4b16dad\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;split&quot;,&quot;shape_divider_bottom&quot;:&quot;split&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 20\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,0v3c0,0,393.8,0,483.4,0c9.2,0,16.6,7.4,16.6,16.6c0-9.1,7.4-16.6,16.6-16.6C606.2,3,1000,3,1000,3V0H0z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-3719d78\" data-id=\"3719d78\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1aedfe1 elementor-widget elementor-widget-progress\" data-id=\"1aedfe1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"progress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<h3 class=\"elementor-title\" id=\"elementor-progress-bar-1aedfe1\">\n\t\t\t\t7. Keep your network view up to date\t\t\t<\/h3>\n\t\t\n\t\t<div aria-labelledby=\"elementor-progress-bar-1aedfe1\" class=\"elementor-progress-wrapper\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\" aria-valuenow=\"100\">\n\t\t\t<div class=\"elementor-progress-bar\" data-max=\"100\">\n\t\t\t\t<span class=\"elementor-progress-text\"><\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-progress-percentage\">100%<\/span>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1cce48 elementor-widget elementor-widget-text-editor\" data-id=\"a1cce48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">Segmentation is not a project that can be considered complete once the filtering rules have been implemented.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">A new PLC, a production line modification, the installation of new software or the opening of a new remote access connection can change the communications that are required.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">Documentation and network mapping must therefore evolve alongside the industrial environment.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\"><strong><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">Effective segmentation relies on regularly updated knowledge of assets, connections and communication flows.<\/span><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-55b4a98 elementor-widget elementor-widget-button\" data-id=\"55b4a98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.b2c-engineering.com\/en\/ressource\/ot-network-segmentation-where-to-start\/\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download the brochure as a PDF in French<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a9bf52c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a9bf52c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-06bcc90\" data-id=\"06bcc90\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a1202d9 elementor-widget elementor-widget-heading\" data-id=\"a1202d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Visibility as the starting point<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b0e379 elementor-widget elementor-widget-text-editor\" data-id=\"0b0e379\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"w6asjq_TextBase _85PZeG_Text PDq2pG_selectionAnchorContainer\" data-d-component=\"text\">Before deciding which communications to allow, block or isolate, you need a sufficiently accurate view of your OT environment.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\"><strong>This is where visibility becomes a genuine cybersecurity concern.<\/strong><\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\"><a href=\"https:\/\/www.b2c-engineering.com\/en\/octovision-ot-cybersecurity\/\" target=\"_blank\" rel=\"noopener\"><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">Octovision<\/span><\/a>, the platform developed by our partner AMDT, helps centralise and contextualise information from the OT environment to provide a more complete view of assets, connections and available data.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\">This visibility can provide a basis for analysing the environment and identifying the security actions that should be prioritised.<\/p><p class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\"><span class=\"w6asjq_TextBase _85PZeG_Text\" data-d-component=\"text\" data-d-default-strong=\"\" data-d-inline=\"\">Segmentation starts with a simple question: <strong>do you know what is really communicating on your OT network?<\/strong><\/span><\/p><p data-d-component=\"text\"><span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">As<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">an<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">industrial<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">systems<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">integrator<\/span>, <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">B2C<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">Engineering<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">helps<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">you<\/span> <strong><span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">secure<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">your<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">industrial<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">systems<\/span><\/strong> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">by<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">offering<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">solutions<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">tailored<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">to<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">your<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">IT<\/span>\/<span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">OT<\/span> <span class=\"--l --r hover:bg-surface-info-muted hover:text-info-muted\">environment<\/span>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50e4cec elementor-align-left elementor-widget elementor-widget-button\" data-id=\"50e4cec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/www.b2c-engineering.com\/en\/octovision-ot-cybersecurity\/\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Discover Octovision<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9000787 elementor-widget elementor-widget-image\" data-id=\"9000787\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/events.teams.microsoft.com\/event\/af206e0c-44fd-4ce3-a7e1-40349ad8a63e@036c47dd-527b-4c28-bcf0-0eb0b9b3090f\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1-1024x576.png\" class=\"attachment-large size-large wp-image-10790\" alt=\"\" srcset=\"https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1-1024x576.png 1024w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1-300x169.png 300w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1-768x432.png 768w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1-1536x864.png 1536w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/09\/octoplant-240926-session2-1.png 1920w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-87856be elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"87856be\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-92ea586\" data-id=\"92ea586\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fc9891d elementor-widget elementor-widget-heading\" data-id=\"fc9891d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Evaluate your needs with our experts<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b5356a elementor-widget elementor-widget-text-editor\" data-id=\"3b5356a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We support you in structuring, securing, and managing your industrial cybersecurity.<br \/>Together, we assess your needs and plan a demonstration of the solution.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-50e91c9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"50e91c9\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a37b96a\" data-id=\"a37b96a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c18361d elementor-position-left elementor-vertical-align-middle elementor-widget__width-initial elementor-widget elementor-widget-image-box\" data-id=\"c18361d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><a href=\"http:\/\/outlook.office.com\/bookwithme\/user\/257c00a5d7a342318d2754cd0a3a94d7%40b2c-engineering.com\/meetingtype\/rdbAwfzB506LizBKY2Su1A2?bookingcode=7e3a6d43-5034-4b61-8c93-3dca8b099811&#038;anonymous&#038;ismsaljsauthenabled\" target=\"_blank\" tabindex=\"-1\"><img decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/02\/1670495911614.jpeg\" class=\"attachment-full size-full wp-image-9866\" alt=\"Johan, Business Development Engineer CSI de B2C Engineering\" srcset=\"https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/02\/1670495911614.jpeg 800w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/02\/1670495911614-300x300.jpeg 300w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/02\/1670495911614-150x150.jpeg 150w, https:\/\/www.b2c-engineering.com\/wp-content\/uploads\/2026\/02\/1670495911614-768x768.jpeg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/figure><div class=\"elementor-image-box-content\"><p class=\"elementor-image-box-description\"><b>Johan FOIREST<\/b>\n<br><b>Business Development Engineer Cybersecurity<\/b>\n<br>Email : jfoi@b2c-engineering.com<\/p><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9113c3 elementor-align-left elementor-widget__width-initial elementor-invisible elementor-widget elementor-widget-button\" data-id=\"c9113c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/outlook.office.com\/bookwithme\/user\/257c00a5d7a342318d2754cd0a3a94d7@b2c-engineering.com\/meetingtype\/rdbAwfzB506LizBKY2Su1A2?bookingcode=d7a85333-caf2-4622-9441-d65146d4e65b&#038;anonymous&#038;ismsaljsauthenabled\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a strategic interview<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1d4de67\" data-id=\"1d4de67\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How do you segment an OT network? Asset mapping and flow analysis to network zones and communication rules.<\/p>\n","protected":false},"author":7,"featured_media":6111,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classifiee"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>OT Network Segmentation: Where Should You Start?<\/title>\n<meta name=\"description\" content=\"How do you segment an OT network? 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