This article is your definitive guide to understanding, configuring, troubleshooting, and securing the mechanism.
However, X-Forwarded-For remains the industry standard due to widespread legacy support. Use Forwarded only if your backend explicitly supports it. a10 x-forwarded-for
If you have → Client → CDN (CloudFlare) → A10 → Backend, you want to preserve the original client IP, not the CDN’s edge IP. This article is your definitive guide to understanding,