Liangxu Linux

Apr 2, 2023 · Fundamentals

How NAT and NAPT Translate Private IPs and Enable Intranet Penetration

This article explains why home networks use private 192.168.x.x addresses, how NAT devices translate private IPs to a single public IP, the detailed SNAT/DNAT processes, the role of ports in NAPT, and how these mechanisms enable inbound connections through techniques like NAT hole punching and intranet penetration.