TCP/IP Protocol Guide

🌐 TCP/IP Protocol Guide

TCP/IP (Transmission Control Protocol/Internet Protocol) is the foundational communication protocol suite for the internet. It enables devices to connect and exchange data across networks. Below is a breakdown of its architecture and key concepts.

Overview

• Core Function: Establishes standardized rules for data transmission
• Key Components:
  • TCP: Ensures reliable, ordered, and error-checked delivery of data
  • IP: Handles addressing and routing of data packets
• 📡 Network Model:
  

  TCP_IP_Protocol_Layer_Structure

Protocol Layers

1. Application Layer

   • HTTP, FTP, SMTP
   • 📄
     

     HTTP_Request_Example

2. Transport Layer

   • TCP vs UDP:
     • ✅ TCP: Reliable, connection-oriented
     • ❌ UDP: Unreliable, connectionless
   • 🧩
     

     TCP_UDP_Comparison

3. Network Layer

   • IP addressing: IPv4 vs IPv6
   • 🌐
     

     Ip_Address_Allocation

4. Link Layer

   • Ethernet, Wi-Fi standards
   • 🧠
     

     Network_Link_Structure

Common Use Cases

• 🌐 Web browsing (HTTP)
• 📩 Email (SMTP)
• 📁 File transfer (FTP)
• 🔐 Secure communication (SSL/TLS over TCP)

Further Reading

For deeper exploration of network security concepts related to TCP/IP, check our Network Security Guide.