VPN engineering notes and guides
How the protocols work, why the product is built the way it is, and what a VPN can and can't do — written by the people running the network, without the marketing gloss.
Why TukTukVPN runs three protocols (and switches for you)
VLESS+Reality, Hysteria2, and WireGuard each solve a different problem. What each one is good at, where each one fails, and why automatic switching beats betting on a single protocol.
How Smart Connect picks your route (and why we can't see it)
Smart Connect races every server–protocol pair from your device and falls back to TCP 443 when UDP is blocked. Not AI — and the choice never leaves your phone.
Why your VPN dies on hotel Wi-Fi (and what a good one does about it)
Captive portals, blocked UDP, and DPI make hotel Wi-Fi hostile to VPNs — why WireGuard-only apps hang forever, and how a TCP-443 fallback keeps you online.
A plain-English guide to modern VPN protocols (2026)
WireGuard, Hysteria2, VLESS+Reality, and the obfuscation-vs-DPI arms race — what each protocol actually does, explained without marketing gloss.