Most beginners think learning cybersecurity means learning tools.

Nmap. Wireshark. Metasploit.

But if you don't understand where systems actually live on a network, those tools won't make sense.

Private IPs. Public IPs. NAT.

These three concepts explain how every device on the planet connects to the internet.

And they show up constantly in interviews.

My latest article breaks them down from scratch 👇