The perils of the “real†client IP | adam-p## SummaryThis post ended up being incredibly long comprehensive. I’m afraid that many people won’t read enough to get everything that’s important, so here are the key points: When deriving the “real client IP address†from the X-Forwarded-For header, use the rightmost IP in the list. The leftmost IP in the XFF header is commonly considered to be “closest to the client†and “most realâ€, but it’s t
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