Karthik Kadambi

Notes

Collection of notes by Karthik Kadambi.

All Notes

Firewall Explained

Firewalls filter and control network traffic to enforce security boundaries and block threats.

DHCP Explained

DHCP automatically assigns IP configuration (address, gateway, DNS) to devices on a network.

NAT Explained

NAT allows many devices on a private network to share one public IP for internet access.

Switching Explained

Understand how network switches work, the difference between hubs and switches, MAC tables, broadcast domains, and VLANs.

ARP Explained

Learn about Address Resolution Protocol (ARP), how it maps IP addresses to MAC addresses, and why it's essential for local network communication.

MAC Addresses

A comprehensive guide to MAC addresses, their structure (OUI vs Device ID), their role in local networks, and how they differ from IP addresses.

Network Ports Explained

Learn what network ports are and how they allow multiple applications to share a single IP address.

UDP Explained

Learn what UDP is, how it works, and why it is used for real-time applications like video calls and gaming.

TCP/IP Explained

Understand how TCP and IP work together to deliver data reliably across the internet.

HTTP/3 Explained

Explore HTTP/3, the latest web protocol built on QUIC for faster, more reliable connections.