About the UDP protocol

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

Contents

(Links are clickable)

• How detection works via WebRTC

• Through what you can check WebRTC leakage or operability

• Why plain TCP proxy is not enough!

• Software solutions to enable WebRTC

• Why blocking WebRTC does not 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 the proxy and thereby “reveal” your real IP if WebRTC is not blocked by the browser. The solution? Two-way support for the UDP protocol on the proxy and in software products

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