If you are trying to learn about Network Engineering, these are must reads:
- Packet Traveling article series - Everything you need to know to understand how data moves from one computer to another through switches and routers
- VLANS article - Stand alone article describing VLANs, what they are, and how they work
- Address Resolution Protocol (ARP) article Series - ARP, Proxy ARP, Gratuitous ARP, ARP Probe & Responses
- Network Address Translation (NAT) article series - Understanding the full depth of NAT, all its terminology, and all types that exist: Static NAT, Static PAT, Dynamic PAT, Dynamic NAT, Policy NAT, Twice NAT
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