What Is a VPN and How Does It Work?
VPN: Your Encrypted Tunnel to the Internet
A VPN (Virtual Private Network) creates an encrypted connection between your device and a server run by the VPN provider. All your internet traffic passes through this encrypted tunnel before reaching the open internet. Think of it as a private, secure pipe inside the public plumbing of the internet.
How It Works Step by Step
Step 1: You connect to a VPN server (you choose the location). Step 2: Your device and the server establish an encrypted tunnel using protocols like WireGuard or OpenVPN. Step 3: All your internet traffic travels through this tunnel. Step 4: The VPN server decrypts your traffic and forwards it to the destination. The website sees the VPN server IP, not yours.
What a VPN Protects
Your IP address: Websites see the VPN server IP instead of yours. Check your current IP to see what is exposed right now. Your traffic: ISPs, hackers on public WiFi, and network admins cannot read your encrypted data. Your DNS queries: Good VPNs route DNS through their own servers, so your ISP cannot see which domains you visit.
What a VPN Does NOT Protect
A VPN does not make you anonymous. If you log into Facebook over a VPN, Facebook still knows it is you. A VPN does not protect against malware, phishing, or browser fingerprinting. Check your fingerprint exposure with our Fingerprint Test. A VPN also does not prevent WebRTC leaks unless specifically configured to do so.
VPN Protocols Matter
WireGuard: Modern, fast, lightweight. The best choice for most people. OpenVPN: Battle-tested, widely supported, slightly slower. IKEv2: Good for mobile devices, handles network switching well. Avoid PPTP, it is old and insecure.
Do You Need a VPN?
Yes, if: You use public WiFi, care about ISP snooping, want to access region-specific content, or work remotely with sensitive data. Maybe not, if: You only browse at home on a trusted network and do not mind your ISP logging your activity.
Choosing a VPN
Look for a no-logs policy (verified by independent audit), a kill switch, DNS leak protection, and WireGuard support. After connecting, verify it works: check your IP, run a DNS Leak Test, and test for WebRTC leaks. If all three pass, you are properly protected.