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21CTO
21CTO
Mar 23, 2024 · Fundamentals

What Is localhost? Uncover the Difference Between localhost and 127.0.0.1

This article explains what localhost and the loopback address 127.0.0.1 are, how they are resolved without DNS, their role in web development, the domain name hierarchy, private IP ranges, virtual hosting, and an introduction to IPv6 addressing.

127.0.0.1DNSDomain Name
0 likes · 11 min read
What Is localhost? Uncover the Difference Between localhost and 127.0.0.1
Liangxu Linux
Liangxu Linux
Oct 13, 2022 · Fundamentals

Why Home LAN IPs Usually Start with 192.168 – History and Logic Explained

This article explains why most home LANs use IP addresses beginning with 192.168, covering the historical defaults of early routers, the evolution of private IP ranges, classful addressing, subnet masks, and NAT, and clarifies that other private ranges like 10.x.x.x and 172.16.x.x are also common.

IP addressingLANNAT
0 likes · 8 min read
Why Home LAN IPs Usually Start with 192.168 – History and Logic Explained
Liangxu Linux
Liangxu Linux
Jun 12, 2022 · Fundamentals

Understanding NAT: Public vs Private IPs, Types, and Server Setup

This article explains how NAT enables multiple private devices to share a single public Internet connection, covering public and private IP concepts, the four NAT types (static, dynamic, NAPT, Easy IP), server port‑mapping configuration, and the advantages and drawbacks of using NAT.

Dynamic NATNAPTNAT
0 likes · 11 min read
Understanding NAT: Public vs Private IPs, Types, and Server Setup
Open Source Linux
Open Source Linux
Jul 10, 2020 · Fundamentals

Public vs Private IP Addresses and NAT Explained: A Complete Guide

This article explains the difference between public and private IP addresses, details the IPv4 class A‑E ranges, describes why private networks often use 192.168.x.x, and introduces NAT as the mechanism that maps internal addresses to external ones for internet access.

IP addressIPv4 classesNAT
0 likes · 6 min read
Public vs Private IP Addresses and NAT Explained: A Complete Guide