The server knows you use a proxy but cannot see your real IP.
If you are sourcing proxies for Reflect4, it is vital to understand the protocols and types available to configure your setup correctly:
The search for "reflect4 proxy list free upd" is entirely reasonable – free, updated proxy lists exist and can be highly useful for legitimate purposes like web scraping, development testing, and market research. The GitHub repositories listed above provide the most reliable access to fresh proxy lists, with automated validation ensuring you're not wasting time on dead IP addresses.