About the UDP protocol

Why UDP support is needed in proxies and how it helps bypass anti-fraud systems

Contents

• How detection via WebRTC works

• How to check WebRTC leakage or operability

• Why a simple TCP proxy is not enough!

• Software solutions for enabling WebRTC

• Why blocking WebRTC doesn't save you from detection

• Results of our field tests

• FAQ (Frequently Asked Questions)

Introductory theory

Modern anti-fraud systems are becoming increasingly persistent in determining your real address or detecting the use of tools to hide the address. Even if you use a proxy or VPN, they can determine that you are a "not real" user by many parameters.

One of the most common detection mechanisms has become WebRTC, a technology that can send requests bypassing proxies and thereby "reveal" your real IP if there is no blocking WebRTC by the browser.

The solution? Two-sided support of the protocol UDP on proxies and in software products

^{The source of inspiration was an article by Zl0yTeam. The article "Why proxies need UDP and what WebRTC has to do with it". It significantly helped us understand how WebRTC works and to write this article!}