By ChatGPT 5.0 (non sponsored article)
What is a VPN?
A VPN (Virtual Private Network) is a technology that creates an encrypted tunnel between your device and the internet. When you connect through a VPN, all of your traffic is first routed to a VPN server, which then forwards the requests to the websites or services you visit. This way, your real IP address is hidden, and your data becomes much harder to monitor or intercept.
Think of a VPN as a secure highway on the internet – no one can see what you’re doing along the way, and the destination only sees the VPN server’s address, not your real one.
How does it work technically?
- Encryption: Your data is wrapped in secure, encrypted packets (usually AES-256 or equivalent).
- Authentication: The VPN client and server exchange keys securely (TLS, WireGuard handshake, etc.).
- Routing: Your internet traffic travels through the VPN server’s IP.
- Exit: The website you visit sees only the VPN server’s IP, not your own.
Why should you use a VPN?
- Privacy: Hide online activity from ISPs, employers, and public Wi-Fi providers.
- Security on public Wi-Fi: Hotel and airport networks are often unsafe; a VPN protects your traffic.
- Access: Bypass geographical restrictions to watch streaming services or access content abroad.
- Business use: Secure remote connections to corporate resources.
- Protection from surveillance: Reduces mass collection of metadata.
What a VPN does NOT do
It’s important to know the limitations:
- Not invisibility: If you log into Facebook, Facebook still knows it’s you.
- Not antivirus: A VPN won’t block malware or viruses.
- Not total anonymity: Advanced tracking (cookies, browser fingerprinting, logged-in accounts) can still identify you.
- Not immunity: Illegal activity can still be traced if authorities gain access to logs (hence why “no-log policies” matter).
Why ProtonVPN?
Among the many providers (NordVPN, ExpressVPN, Surfshark, Mullvad, etc.), ProtonVPN stands out because:
- Built by the creators of ProtonMail, based in Switzerland with strict privacy laws.
- No-log policy: They don’t log your online activity.
- Open-source clients: Code is open for inspection.
- Strong encryption: Supports WireGuard, OpenVPN, and IKEv2.
- Free plan available: Even the free tier comes with no-logging.
- Secure Core: Routes traffic through extra-secure servers in privacy-friendly countries.
Setup and Use of ProtonVPN
1. ProtonVPN on iOS (iPhone/iPad)
- Download ProtonVPN app from the App Store.
- Sign in with your Proton account.
- Allow VPN configuration permissions.
- Choose a server (Quick Connect for beginners).
- Enable Kill Switch and NetShield in settings.
Best practice:
- Enable Auto-Connect so VPN activates automatically.
- Use On-demand VPN in iOS settings to reconnect if dropped.
2. ProtonVPN on Android
- Download from Google Play.
- Log in with your Proton account.
- Choose WireGuard for best performance.
- Enable Always-on VPN and Block connections without VPN in Android’s system settings.
Tips:
- Use Split tunneling to exclude specific apps (e.g., banking).
3. ProtonVPN on Windows (PC)
- Download from protonvpn.com/download.
- Install and sign in.
- Select protocol (WireGuard/OpenVPN recommended).
- Enable Kill Switch.
- Optionally use Secure Core servers.
Tips:
- Set to auto-launch with Windows.
- Create Profiles for different needs (Streaming, High-speed, Maximum Security).
4. ProtonVPN on macOS
- Download the macOS client from ProtonVPN’s official site.
- Install and log in.
- Connect via Quick Connect or manual server selection.
- Turn on Permanent Kill Switch.
5. ProtonVPN on Linux
Available both as GUI app and CLI.
Example on Debian/Ubuntu:
sudo apt-get update
sudo apt-get install -y protonvpn
protonvpn-cli login username
protonvpn-cli connect
Tips:
- Run
protonvpn-cli status
to verify connection. - Add to systemd or crontab for automatic startup.
Strategies and Best Practices
- Always-on VPN: Especially important on mobile devices.
- Kill Switch: Prevents data leaks.
- DNS leak check: Test via dnsleaktest.com.
- Choose servers wisely:
- Nearby servers = faster speeds
- Secure Core = stronger privacy
- Dedicated = better for streaming
- Limit account sharing: ProtonVPN allows multiple devices but keep them yours.