{"id":3385,"date":"2026-10-27T10:20:00","date_gmt":"2026-10-27T17:20:00","guid":{"rendered":"https:\/\/cyber.mag212.com\/learn\/"},"modified":"2026-10-30T18:25:38","modified_gmt":"2026-10-31T01:25:38","slug":"learn","status":"publish","type":"page","link":"https:\/\/cyber.mag212.com\/fr\/learn\/","title":{"rendered":"Apprendre"},"content":{"rendered":"\n<div class=\"m212x\" id=\"m212-learn\">\n<style>\n.m212x{--bg:#0a0f15;--panel:#0f1720;--panel2:#121c27;--line:#1f2d3a;--line2:#2a3b4b;--ink:#e6edf3;--mute:#9fb0c0;--green:#3ee6a0;--red:#ff5468;--cyan:#3cc8f0;--amber:#f6b544;--violet:#a98bff;\n font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:var(--ink);line-height:1.6;font-size:16px}\n.m212x *{box-sizing:border-box}\n.m212x h2,.m212x h3,.m212x h4,.m212x p,.m212x ul,.m212x ol{margin:0}\n.m212x a{color:var(--cyan)}\n.m212x .hero{position:relative;background:radial-gradient(ellipse at 90% 0%,rgba(60,200,240,.14),transparent 60%),var(--bg);border:1px solid 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.p-l{color:var(--green);border-color:rgba(62,230,160,.5);background:rgba(62,230,160,.08)}\n.m212x .p-m{color:var(--amber);border-color:rgba(246,181,68,.5);background:rgba(246,181,68,.08)}\n.m212x .p-h{color:#ff8a5c;border-color:rgba(255,138,92,.5);background:rgba(255,138,92,.08)}\n.m212x .p-c{color:var(--red);border-color:rgba(255,84,104,.5);background:rgba(255,84,104,.08)}\n.m212x .toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}\n.m212x .toc a{font-size:14px;font-weight:700;text-decoration:none;color:var(--ink);background:var(--panel2);border:1px solid var(--line2);border-radius:999px;padding:7px 13px}\n.m212x .toc a:hover{border-color:var(--green);color:var(--green)}\n.m212x input[type=text],.m212x input[type=search],.m212x input[type=url]{width:100%;background:#060a0f;color:var(--ink);border:1px solid var(--line2);border-radius:8px;padding:12px 14px;font-size:16px;font-family:inherit}\n.m212x input:focus{outline:2px solid var(--cyan);outline-offset:1px}\n.m212x button{font-family:inherit;font-size:15px;font-weight:700;cursor:pointer;border-radius:8px;padding:11px 16px;border:1px solid var(--line2);background:var(--panel2);color:var(--ink)}\n.m212x button.pri{background:var(--green);color:#04130c;border-color:var(--green)}\n.m212x .help{display:flex;gap:18px;align-items:center;flex-wrap:wrap;background:linear-gradient(90deg,rgba(60,200,240,.12),rgba(62,230,160,.05));border:1px solid rgba(60,200,240,.35);border-radius:14px;padding:20px 24px}\n.m212x .help div{flex:1;min-width:240px}\n.m212x .help a.cta{display:inline-block;background:var(--cyan);color:#03141b;font-weight:800;text-decoration:none;border-radius:8px;padding:12px 18px}\n.m212x .small{font-size:13.5px;color:var(--mute)}\n<\/style>\n<section class=\"hero\"><div class=\"kick\">MAG212 CYBER \u00b7 Learn<\/div><h2>Understand security, <span>one concept at a time.<\/span><\/h2><p>Clear explanations and quick-reference guides for beginners and IT professionals alike.<\/p><\/section>\n<section class=\"sec\"><h3>Start here<\/h3><p class=\"lead\">Practical guides, written in plain language and checked against primary sources.<\/p>\n<div class=\"grid\">\n<a class=\"card\" href=\"\/learn\/learning-paths\/\"><span class=\"ic\">\ud83e\udded<\/span><b>Learning paths<\/b><p>Not sure where to start? Three step-by-step tracks: security basics, network engineer and SOC &amp; incident response.<\/p><span class=\"go\">CHOOSE A PATH \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/cve-cvss\/\"><span class=\"ic\">\ud83d\udcca<\/span><b>CVE &amp; CVSS explained<\/b><p>What vulnerability IDs and severity scores really mean, and how to prioritise patches.<\/p><span class=\"go\">READ THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/glossary\/\"><span class=\"ic\">\ud83d\udcd6<\/span><b>Cybersecurity glossary<\/b><p>45 essential terms, from zero-day to zero trust, with a quick search.<\/p><span class=\"go\">OPEN THE GLOSSARY \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/cheat-sheets\/\"><span class=\"ic\">\ud83e\uddfe<\/span><b>Cheat sheets<\/b><p>Incident first hour, common ports, Windows event IDs, Linux logs and hardening basics.<\/p><span class=\"go\">VIEW CHEAT SHEETS \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/interior-routing-protocols\/\"><span class=\"ic\">\ud83d\udd00<\/span><b>Interior routing compared<\/b><p>RIP, EIGRP, OSPF and IS-IS side by side: one four-router lab, configs, troubleshooting tree and exam questions.<\/p><span class=\"go\">START HERE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/bgp-cheat-sheet\/\"><span class=\"ic\">\ud83c\udf10<\/span><b>BGP cheat sheet<\/b><p>Network engineering field guide: a three-router lab, best-path selection, troubleshooting and securing BGP.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/eigrp-cheat-sheet\/\"><span class=\"ic\">\ud83d\udd01<\/span><b>EIGRP cheat sheet<\/b><p>DUAL, metrics, classic and named-mode configs, HMAC authentication and a troubleshooting decision tree.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/isis-cheat-sheet\/\"><span class=\"ic\">\ud83d\uddfa\ufe0f<\/span><b>IS-IS cheat sheet<\/b><p>Multi-area L1\/L2 design, NET addressing, a six-router IOS XE lab, SPF, troubleshooting and authentication.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/ospf-cheat-sheet\/\"><span class=\"ic\">\ud83e\udded<\/span><b>OSPF cheat sheet<\/b><p>Multi-area design, LSA types, neighbor states, a five-router IOS XE lab, HMAC-SHA authentication and troubleshooting.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/rip-cheat-sheet\/\"><span class=\"ic\">\ud83d\udce1<\/span><b>RIP cheat sheet<\/b><p>RIPv2 and RIPng: hop count, timers, a three-router IOS XE lab, MD5 authentication and troubleshooting.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/stp-cheat-sheet\/\"><span class=\"ic\">\ud83c\udf33<\/span><b>Spanning Tree cheat sheet<\/b><p>Rapid PVST+ and MST: root bridge election, port roles, per-VLAN load balancing, BPDU\/root\/loop guards and troubleshooting.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/vlan-cheat-sheet\/\"><span class=\"ic\">\ud83e\udde9<\/span><b>VLAN cheat sheet<\/b><p>802.1Q trunks, access and voice ports, SVIs and inter-VLAN routing, VTP, VLAN security and troubleshooting.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/learn\/first-hop-redundancy\/\"><span class=\"ic\">\ud83d\udedf<\/span><b>First-hop redundancy cheat sheet<\/b><p>HSRP, VRRP and GLBP: virtual gateways, priority, preemption, object tracking, failover testing and hardening.<\/p><span class=\"go\">OPEN THE GUIDE \u2192<\/span><\/a>\n<\/div><\/section>\n<section class=\"sec\"><h3>Put it into practice<\/h3><div class=\"grid\">\n<a class=\"card\" href=\"\/tools\/\"><span class=\"ic\">\ud83d\udee0\ufe0f<\/span><b>Free security tools<\/b><p>14 free tools: subnet calculators, Cisco config checker, email security checker, password tools, security self-assessment and more.<\/p><span class=\"go\">TRY THE TOOLS \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/stay-safe\/\"><span class=\"ic\">\ud83d\udee1\ufe0f<\/span><b>Stay Safe<\/b><p>Scam quiz, red flags and a 10-minute checklist for you and your family.<\/p><span class=\"go\">GET PROTECTED \u2192<\/span><\/a>\n<a class=\"card\" href=\"\/category\/digital-magazine\/\"><span class=\"ic\">\ud83d\udcd8<\/span><b>The magazine<\/b><p>In-depth special editions on the incidents shaping security right now.<\/p><span class=\"go\">READ THE MAGAZINE \u2192<\/span><\/a>\n<\/div><\/section>\n\n<div class=\"help\"><div><div class=\"kick\" style=\"margin-bottom:4px\">Need expert help?<\/div>\n<p style=\"font-size:17px;margin:0\"><b>MAG212 CYBER<\/b> offers network and cybersecurity consultation, plus security seminars for organisations around the world.<\/p><\/div>\n<a class=\"cta\" href=\"\/services\/\">Explore our services \u2192<\/a><\/div>\n\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Plain-language cybersecurity guides and quick 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