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Http_x_forwarded_for

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1:09 pm on Sep 28, 2001 (gmt 0)

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I just started implementing
$ENV{'HTTP_X_FORWARDED_FOR'}
in my logging scripts. It seems very useful to get the original ip from visitors behind a proxy.

I wonder I anybody has been using this in cloaking scripts, and if well known spiders were ever found hiding behind a proxy ?

6:24 pm on Sept 28, 2001 (gmt 0)

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WebmasterWorld Senior Member littleman is a WebmasterWorld Top Contributor of All Time 10+ Year Member

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So far I haven't seen any search engine bot doing this, of course if they were looking to bust cloaks they would probably use a proxy that isn't set to sent X_FORWARDED header. Another variation is HTTP_FORWARDED -- $ENV{'HTTP_FORWARDED'} for your perl script.
 

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