Privacy guides
VPN and privacy guides for real checks.
Learn how VPNs, DNS, proxies, browser settings and Linux networking commands work together.
How to check if your VPN is working from Linux
Terminal based checks for public IP, DNS resolver and route behaviour.
Read guide →How to check for DNS leaks
Understand DNS leak symptoms and how to compare resolver behaviour.
Read guide →VPN vs proxy
Understand when a VPN is better than a proxy and when neither solves the real problem.
Read guide →Learn the foundations
VPN troubleshooting is easier if you understand Linux commands and DNS lookups. For hands-on command practice, use CommandLineQuiz command builders. For DNS checks, use DNSNow. For deeper networking reading, see IT-Books.
VPN review guides
Choosing a VPN is easier when you compare benefits, prices, DNS behaviour and Linux support in one place. Start with the review table, then read the individual provider reviews.