# Why a simple TCP proxy is not enough!

Even if your SOCKS5 proxy supports <mark style="color:purple;">UDP</mark>, most anti-detect browsers (in particular, those based on Chromium) cannot pass <mark style="color:purple;">WebRTC</mark>-traffic through a proxy. The reason is the technical limitations of the browser engine.

\
As of today, captcha systems are already introducing enhanced checks for the presence of <mark style="color:purple;">WebRTC</mark>, as an example can be <mark style="color:purple;">Discord</mark>, they connected "<mark style="color:purple;">Hcaptcha-enterprise</mark>", where a check for the presence of an enabled <mark style="color:purple;">WebRTC</mark> on the user's device.