VPN testing checklist

To test:

Is VPN active?
Is it leaking?
Does it look residential?
Does it alter network fingerprints?

Public IP Test (Basic Detection) - curl ipinfo.io
DNS Leak Test - nslookup google.com
MTU Test (Encapsulation Detection) - ping 8.8.8.8 -f -l 1472
TCP MSS Inspection - Use Wireshark and Look for SYN packets.
Traceroute Path Test - tracert 8.8.8.8
WebRTC Leak Test - browserleaks.com/webrtc
IPv6 Leak Test - test-ipv6.com
Latency / Jitter Test - ping -n 50 8.8.8.8. VPN usually causes: More Jitters and Latency.
Reverse DNS (PTR Record) - nslookup <your-public-ip>
IP Reputation Check - Like most IP's from VPN Providers like Express VPN, etc. are blacklisted and all. Look for: Proxy/VPN classification, Hosting provider tagging

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Machine Learning Part 1

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