VPN Basics

What a VPN does, what it does not do, and how to set one up safely.

• What a VPN Actually Does (and Does Not Do)A plain-English explanation of what a VPN protects, what it doesn't, and whether you need one.
• Is Public Wi-Fi Safe? What a VPN ChangesHow risky airport, hotel and cafe Wi-Fi really is today, what a VPN adds, and the habits that matter more.
• How to Set Up a VPN on iPhone, Android, Windows and MacStep-by-step guidance for installing a VPN app on your phone or computer, plus what to check before you trust it.
• VPN vs Proxy vs Tor: What Is the Difference?Three ways to hide your IP address, how each one works, what each one protects, and which to use for what.
• Do You Need a VPN at Home?When a VPN makes sense on your home network, when it doesn't, and what to do instead if your worry is trackers or your internet provider.
• Free VPN vs Paid VPN: What You Give UpWhy most free VPNs cost you in other ways, how they make money, and how to tell a safe free option from a risky one.
• How to Check That Your VPN Is Really WorkingA five-minute test for IP, DNS and IPv6 leaks and a working kill switch, so you know your VPN is protecting you.