2ip.io/privacy/ and 'Defining tunnel (two way ping)' on SOCKS5 proxy

Question

I was able to setup my first proxy server on Ubuntu 14 using danted. However, when I visit 2ip.io/privacy/

and run their privacy test, they return:

Defining tunnel (two way ping) found

This is considered bad and reasoning the score 'Probability of anonymization 99%' What is two way ping and how to prevent it showing up?

FWIW, this terminology is non-standard. I'm not sure what they are referring to. — forest, Aug 07 '18 at 01:07

score 1 · Answer 1 · answered Apr 17 '19 at 22:41

What this test means is that evidence of a VPN tunnel has been found by way of analyzing cipher timing signatures (ie, passive TCP/IP fingerprinting). Check out the following article for specifics relating to this type of fingerprinting and what you can do to protect yourself: https://medium.com/@ValdikSS/detecting-vpn-and-its-configuration-and-proxy-users-on-the-server-side-1bcc59742413

1 Answers1