Public IP: Unique, global, assigned by ISP.
Private IP: Local, reusable, assigned by your router.
We need both because IPv4 is limited, and private IPs save addresses. Plus, it’s safer—your devices aren’t directly exposed.
How it works? NAT translates private to public so your requests reach the internet.
Tool: [Wireshark](https://www.wireshark.org/) if you wanna see traffic in action (but it’s nerdy).
Private IP: Local, reusable, assigned by your router.
We need both because IPv4 is limited, and private IPs save addresses. Plus, it’s safer—your devices aren’t directly exposed.
How it works? NAT translates private to public so your requests reach the internet.
Tool: [Wireshark](https://www.wireshark.org/) if you wanna see traffic in action (but it’s nerdy).