What is a VPN? A practical guide to what it actually does
Understand encrypted tunnels, IP addresses, provider trust, and the limits of a VPN before you choose one.
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clearer connection.
A practical library for understanding VPNs, choosing deliberately, and working through connection questions. Start with the path that matches your goal.
Choose a reading path
Start with the question you have.
Start with the fundamentals
Learn what a VPN changes, where the tunnel ends, and how it differs from other tools.
Explore the guideUnderstand your settings
Make sense of protocols, kill switches, and selective routing before you change them.
Explore the guideInvestigate a connection
Separate DNS behavior from speed, then work from a documented baseline.
Explore the guideA useful way to read: Pick one goal, learn the relevant concepts, then follow your provider’s exact instructions for your app and operating system. These guides explain the decisions; they do not replace product-specific support.
Ten complete guides
The full library
All articles are free to read. No account, download, or signup is required.
How to choose a VPN without falling for the marketing
A decision framework for reading policies, checking app coverage, evaluating audits, and testing a VPN against your own needs.
VPN vs proxy vs Tor: understand the different jobs
Compare routing, application coverage, trust, and everyday usability without treating three different tools as interchangeable.
WireGuard vs OpenVPN: choosing a protocol for your setup
Compare protocol design, transport choices, compatibility, and testing without assuming one protocol wins on every device.
VPN kill switches: what happens when the tunnel drops?
Learn the difference between connection status and traffic blocking, including platform limits, testing, and recovery.
Split tunneling explained: decide what uses your VPN
Understand included and excluded routes, app exceptions, DNS interactions, and how to keep a split-tunnel setup understandable.
DNS leaks explained: what to check and what results mean
Learn why DNS deserves its own check, how to interpret resolver results, and how to troubleshoot without overclaiming.
Public Wi-Fi and VPNs: a practical guide without the fear
Understand what HTTPS already protects, where a VPN can help, and which habits matter on café, hotel, and airport networks.
Free vs paid VPNs: look beyond the price tag
Compare funding, limits, policies, renewal terms, and practical suitability without assuming that free is unsafe or paid is private.
How to troubleshoot a slow VPN, one change at a time
Find a useful baseline, separate latency from throughput, and test routes and protocols without abandoning your privacy settings.