Network Foundations

OSI model, TCP/IP, subnetting, IP addressing, NAT, and PAT — the fundamental concepts underlying all network communication.

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Topics

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Lessons

Address translation, port mapping, NAT traversal

OSI Model & TCP/IP

Layer functions, encapsulation, protocol stacks

Subnetting & IP Addressing

CIDR, VLSM, IPv4/IPv6, private vs public addressing

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