This blog introduces foundational cybersecurity concepts such as the OSI model, TCP/IP stack, subnetting, CIDR, and DNS, shared through a beginner’s personal learning journey. It emphasizes the importance of understanding these principles for building a solid cybersecurity knowledge base. #OSIModel #TCPIPStack #Subnetting #DNS
Keypoints
- The OSI Model consists of 7 layers, each with its specific functions in network communication.
- The TCP/IP stack is a practical model used globally, combining several OSI layers into the Application layer.
- Subnetting divides large networks into smaller, manageable subnets to improve efficiency and security.
- CIDR notation (/24, /26, etc.) indicates the number of network bits in an IP address, aiding in subnetting.
- DNS acts as a phonebook of the internet by translating domain names into IP addresses for easier access.