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From Henri Gomez <>
Subject Re: RemoteIpValve advices
Date Mon, 31 Jan 2011 21:54:14 GMT
> Not necessarily.  The closest immediate proxy is the last entry in that
> list.  You might not trust all of the machines in that proxy chain to provide
> legitimate IP details.

In my case, x-forwarded-for:,, was my
browser IP and EC2 IP.

the Valve is not activated by default and should only be used in
Amazon Load Balancing case.

> mod_remoteip has the concept of trusted vs. untrusted proxies, where only the
> trusted ones will be allowed to present the next-immediate-left IP address as
> a legitimate proxy address, and that IP is then compared to the trust list.

> So you might trust yahoo or google's proxy servers, but not your typically
> pwned user PC which is relaying spam or being employed as a DDoS agent.

x-forwarded-server: domU-12-31-38-00-B2-08.compute-1.internal is a
trusted server, aka EC2 box.

So +1 to have this on RemoteIpFilter/Valve, an uniq filter/valve to
handle such cases.
Mark to you need code contribution on RemoteIp Valve ?

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