🌐 Networking

A network connects devices that exchange data through shared protocols. These notes build from first principles and connect each concept to practical troubleshooting and security work.

Topics

• Network fundamentals and topologies
• IP addresses and subnetting
• MAC addresses and local delivery
• Ports and sockets
• TCP and UDP
• DNS and DHCP
• HTTP and HTTPS
• OSI and TCP/IP models
• Routers, switches, and firewalls