https://www.cyberkashif.com/tags/network-security-fundamentals/Recent content in Network Security Fundamentals on Mohd Kashif | SOC AnalystHugoenFri, 24 Jul 2026 09:58:10 +0530https://www.cyberkashif.com/posts/osi-tcpip-networking-protocols-ports-guide/Fri, 24 Jul 2026 09:58:10 +0530https://www.cyberkashif.com/posts/osi-tcpip-networking-protocols-ports-guide/<h1 id="networking-fundamentals-osi-model-tcpip-protocols--ports"> Networking Fundamentals: OSI Model, TCP/IP, Protocols &amp; Ports <a class="heading-link" href="#networking-fundamentals-osi-model-tcpip-protocols--ports"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h1> <hr> <h2 id="osi-open-systems-interconnection-model"> OSI (Open Systems Interconnection) Model <a class="heading-link" href="#osi-open-systems-interconnection-model"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h2> <p>The OSI model is a <strong>seven-layer framework</strong> that explains how data travels across a network. Each layer serves a specific function and helps in troubleshooting networking issues.</p> <h3 id="osi-layers"> OSI Layers <a class="heading-link" href="#osi-layers"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ol> <li> <p><strong>Physical Layer</strong></p> <ul> <li>Cables, hardware transmission, electrical signals</li> </ul> </li> <li> <p><strong>Data Link Layer</strong></p>