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IP Address, VPN & Network Security Blog

Free guides on IP addresses, VPNs, DNS, hosting, CGNAT, WiFi, and online privacy - 99 articles

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Plain-English explainers on IPs, DNS, ASN, CGNAT, VPNs, WiFi, and networking - no jargon assumed.

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Showing results for "what is" (28)

What Is a Network Interface Controller (NIC)? How It Works

What a NIC does, wired vs WiFi vs virtual adapters, how MAC addresses and OUIs work, NIC features like offloads and Wake-on-LAN, and adapter troubleshooting.

13 min read·September 11, 2026·11 views
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What Is Ethernet? Cables, Speeds and How It Works

How Ethernet works, speeds from 100 Mbps to 800 Gbps, which cable category you need, Ethernet vs WiFi, Power over Ethernet, and how to fix a slow connection.

12 min read·September 11, 2026·8 views
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What Is a Personal Area Network (PAN)? Types and Examples

How a PAN connects one person's devices, the technologies behind it (Bluetooth, BLE, NFC, UWB, USB), PAN vs LAN and WAN, tethering, and PAN security.

16 min read·September 11, 2026·8 views
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What is a Firewall? Network Security Basics

Learn what firewalls are, how they protect your network, different types, and how to configure them for security.

12 min read·Updated Sep 6, 2026·74 views
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What Is a VPN? How It Works and What It Actually Hides

Learn how a VPN changes your public IP, what it hides from websites and ISPs, what it cannot protect, and how to test it.

20 min read·Updated Aug 20, 2026·1,722 views
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What is an IP Address and How Does it Work?

Learn the fundamentals of IP addresses, how they are assigned, and their role in internet communication.

8 min read·Updated Sep 6, 2026·1,126 views
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What Is Web Hosting? How Hosting Works and What You Actually Buy

Learn what web hosting is, how hosting fits into DNS and website delivery, the main hosting types, and how to choose the right category for your site.

10 min read·Updated Sep 4, 2026·73 views
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What Is Encryption? How It Works and Why It Matters

Learn what encryption is, how symmetric and asymmetric encryption differ, and why encryption matters for privacy, payments, and secure communication.

11 min read·April 5, 2026·259 views
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What Is Fiber Optic Internet? How Fiber Works

Learn how fiber optic internet works, why it is fast, and how fiber compares with WiFi, cable, and other network access technologies.

11 min read·Updated Sep 6, 2026·40 views
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Showing 1-9 of 28 articles

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