You may choose a unusual Header name.

On Fri, Apr 23, 2010 at 6:09 AM, karmaboy <nginx-forum@nginx.us> wrote:
> When using nginx as reverse proxy, to determine the actual client IP address I would need to rely on the X-Real-IP header. Since this is just an HTTP header than can be faked, is it possible for a visitor to include an X-Real-IP header value of their own, passing a fake IP to the back-end server? Does nginx always overwrite this value with the one it detects?
>
> Thx
>
> Posted at Nginx Forum: http://forum.nginx.org/read.php?2,78144,78144#msg-78144
>
>
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--
Ren Xiaolei

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