VPNs, explained plainly
The clear, honest guide to what a VPN really does.
Tunnelwise explains what a VPN is and how it works in plain English — with original diagrams and the honest limits included. No rankings, no hype, just the answer first.
A VPN doesn’t make you invisible — it moves who can see your traffic from your ISP and the local network to the VPN provider. Toggle the tabs to compare.
The explainers
All explainers →What Is a VPN Server? What It Does With Your Traffic, and Who Runs It
A VPN server decrypts your traffic and speaks to sites for you. What it sees, who shares its IP, where it really is, and RAM-only claims.
Explainer02Oct 13, 2026Do I Need a VPN? A 60-Second Decision Tree, Including 'Probably Not'
Four questions decide it. A VPN helps on untrusted Wi-Fi, against ISP visibility and for travel; it does nothing about phishing or tracking.
Explainer03Oct 13, 2026History of VPN: What VPN Stands For, and How It Got Here (1995 to 2026)
VPN means virtual private network. How the term, and the technology, moved from 1990s office links to today's privacy apps.
Explainer04Sep 21, 2026Are VPNs Legal? A Clear, Country-Aware Answer
In most countries, yes — using a VPN is legal. A few states ban or restrict them, and a VPN never makes an illegal act legal. Here's the honest map.
Explainer05Sep 21, 2026Do VPNs Make You Anonymous? (Honestly, No)
No — a VPN doesn't make you anonymous. It shifts who can see your traffic to the provider. Here's what still identifies you, and what a VPN really buys.
Explainer06Sep 21, 2026IP Addresses and DNS: What a VPN Changes
A VPN swaps your public IP for the server's and can route DNS through the tunnel. Here's what those two things reveal — and how they leak.
Explainer07Sep 21, 2026Split Tunneling Explained: Route Some Apps, Not All
Split tunnelling lets you send some apps through the VPN and let others connect directly. Here's how it works and the privacy trade-off.
Explainer08Sep 21, 2026VPN Encryption Basics: What AES-256 Really Means
VPN encryption scrambles your traffic so only the VPN server can read it. Here's what AES-256, keys and 'military-grade' actually mean.
Explainer09Sep 21, 2026VPN Protocols Explained: WireGuard, OpenVPN and IKEv2
A VPN protocol is the rulebook for building the tunnel. Here's what WireGuard, OpenVPN, IKEv2 and the older ones actually are — at concept level.
Explainer10Sep 21, 2026VPN vs Proxy: What's the Difference?
A VPN encrypts and routes all your traffic; a proxy usually reroutes one app and skips the encryption. Here's when each one makes sense.
Explainer11Sep 21, 2026What Does 'No-Logs' Actually Mean for a VPN?
'No-logs' means a VPN says it doesn't record what you do. What makes it believable is an independent, dated audit — here's how to read one.
Explainer12Sep 21, 2026What Is a VPN Kill Switch? (And Why It Matters)
A kill switch blocks your internet the instant the VPN drops, so nothing leaks in the gap. Here's how it works and when to leave it on.
Explainer13Sep 21, 2026What Is a VPN Tunnel? The Encrypted Path, Explained
A VPN tunnel is the encrypted connection between your device and a VPN server. Here's what 'tunnelling' really means and how encapsulation works.
ExplainerStart here
If you're new to all this, begin with what a VPN is — the one-page overview of the mechanism, the real use cases, and the limits. When you want the step-by-step, how a VPN works walks through the tunnel, the handshake and the encryption without the jargon.
What makes these explainers different
Every explainer answers its question in the first two sentences, then draws the idea out with an original diagram you won't find anywhere else. We don't sell a "best VPN" list, we don't fake speed tests, and we say plainly what a VPN can't do — because the honest version is more useful than the marketing one. A VPN shifts who can see your traffic; it doesn't make you anonymous, and we never pretend otherwise.
From there, the popular jumping-off points are VPN vs proxy, what a kill switch is, and the honest one everyone should read — do VPNs make you anonymous.