A VPN, or Virtual Private Network, is a service that encrypts your internet connection and routes it through a secure server, hiding your real IP address and making your online activity unreadable to outsiders. In practice, that means your internet provider, advertisers, and anyone snooping on a shared network can no longer see what you do online.
This guide explains exactly how a VPN works, what it protects you from, what it doesn't, and how to decide whether you need one.
How a VPN works, step by step
When you connect to a VPN, four things happen:
- Your device opens an encrypted tunnel to a VPN server. Everything that travels through this tunnel is scrambled so it can't be read in transit.
- Your traffic is rerouted through that server instead of going straight to the websites and apps you use.
- Your real IP address is masked. Websites see the VPN server's IP and location, not yours.
- The response comes back through the same encrypted tunnel to your device.
The result: your browsing, streaming, downloads, and app activity stay private, and your location appears to be wherever the VPN server is.
What a VPN protects you from
- Snooping on shared and public Wi-Fi. On café, airport, or hotel networks, encryption stops others on the network from intercepting your data.
- ISP tracking and throttling. Your provider can't log which sites you visit or selectively slow specific services it can't see.
- IP-based tracking. Hiding your IP makes it harder for advertisers and data brokers to build a profile tied to your location.
- Censorship and geo-restrictions. Connecting through a server in another country lets you reach content that's blocked where you are.
What a VPN does NOT do
A VPN is one layer of privacy, not a magic shield. It won't make you anonymous if you log into accounts that already identify you, it won't remove tracking cookies on its own, and it isn't a replacement for antivirus software. For the full picture, see what a VPN hides and what it doesn't.
Key VPN features worth understanding
Modern VPNs bundle several tools. The ones that matter most:
- Protocol — the technology that builds the tunnel. FortisVPN uses WireGuard, a fast, modern protocol.
- Kill switch — cuts your internet if the VPN drops, so nothing leaks.
- Split tunneling — lets you choose which apps use the VPN.
- No-logs policy — the provider's promise not to record what you do. See what a no-logs policy means.
Do you need a VPN?
If you ever use public Wi-Fi, want to keep your browsing private from your ISP, travel and want access to your usual content, or simply prefer that your online activity stays yours, a VPN is worth running. The strongest approach is to keep it on whenever you're connected.
FortisVPN runs quietly in the background across all your devices with one subscription covering up to 10 devices. You can try it free for 7 days and download the app for your platform.
Frequently asked questions
Q. Is using a VPN legal? In most countries, yes — using a VPN is completely legal. A handful of countries restrict or ban them. Using a VPN to commit a crime remains illegal regardless.
Q. Does a VPN slow down my internet? There can be a small reduction because traffic is encrypted and rerouted, but with a modern protocol like WireGuard the difference is usually minor and often unnoticeable.
Q. Will a VPN make me completely anonymous? No. It greatly improves privacy by hiding your IP and encrypting traffic, but full anonymity also depends on your own habits, such as not logging into identifying accounts.
Q. How many devices can one VPN protect? With FortisVPN, a single subscription covers up to 10 devices at once, including phones, laptops, tablets, and TVs.
Last updated: 14 June 2026
