https://akshayd-dev.pages.dev/tags/security/ Recent content in Security on Akshay Deshpande Hugo en-us Thu, 19 Jun 2025 00:00:00 +0000 https://akshayd-dev.pages.dev/posts/networking-and-protocols-101-notes/ Thu, 19 Jun 2025 00:00:00 +0000 https://akshayd-dev.pages.dev/posts/networking-and-protocols-101-notes/ <p>I recently did a brush up course on Networking/Protocols 101&rsquo;s. Making my notes public.</p> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#networking-basics-protocols">Networking Basics / Protocols:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#mental-model-to-think-about-all-protocols">Mental model to think about all protocols:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#a-few-notes-about-different-protocols">A few notes about different Protocols:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#network-layer-protocol">Network layer protocol:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#transport-layer-protocol">Transport layer protocol:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#tcp">TCP:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#udp">UDP:</a></li> </ol> </li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#other-protocols">Other Protocols:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#http">HTTP:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#smtp">SMTP:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#xmpp">XMPP:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#mqtt">MQTT:</a></li> </ol> </li> </ol> </li> </ol> </li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#aws-networking">AWS Networking:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#local-zone">Local Zone:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#edge-location">Edge location:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#understanding-ipv4-ipv6">Understanding IPv4, IPv6</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#ipv4">IPv4</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#ipv6">IPv6</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#classes-ipv4">Classes IPv4</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#how-to-read-cidr-noation">How to read CIDR noation:</a></li> </ol> </li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#aws-vpc">AWS VPC:</a> <ol> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#interacting-with-vpc">Interacting with VPC:</a></li> </ol> </li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#internet-gateway-igw">Internet Gateway (IGW)</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#subnet">Subnet:</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#route-table">Route table</a></li> <li><a href="https://akshayd.dev/2025/06/19/networking-and-protocols-101-notes/#nacl">NACL:</a></li> </ol> </li> </ol> <h1 id="networking-basics--protocols">Networking Basics / Protocols:</h1> <p>There are 7 layers of communications as defined in OSI (Open systems Interconnection) model</p>