Tool to check for residential Tailscale VPN leaks

I've built a little tool with which you can check if your residential Tailscale VPN is working properly and gives you hints on how to fix occurring issues. It checks:

• your exit IPv4, IPv6, DNS, WebRTC and proxy leaks
• if your browser time zone and language are matching the exit location
• travel routers and double NAT in your local network
• TCP fingerprints

Tailscale-specific checks:

• MTU (Tailscales 1280 MTU shows up to sites as MSS 1240)
• WebRTC (your Tailscale addresses 100.x / fd7a:115c:a1e0:: can leak through)
• 100.100.100.100 (a Tailscale related web page)

No account needed, no subscription, no data retention, just a little helper. Would be happy for your feedback and a test on your side. By clicking on "install" (or "add to homescreen") you can use the webapp like a native app on your PC or phone.

https://tunnelprobe.com/

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