PHP Redirect Question (about headers/referral info)

Hey,

For the question, assume there are 3 different sites on different domains and IPs called A, B and C.

I get a visitor to site A who clicks a link. I set that link up to go to a special page on site B that will immediately redirect the visitor to site C.

<?php
header( 'Location: http://www.siteC.coml' ) ;
?>

Code (markup):

So from the user's perspective, it seems like A-C, but in reality, it's A-B-C.

My question, then, is if site C is owned by a third party (i.e. not me), can the owner of site C detect that the user originally came from site A via headers or referral info or anything like that? If so, how do you prevent this? I want to be able to send a visitor from A to C anonymously, and am essentially using site B as a proxy.

 

the http referer would be site b being as it is the one that directed them to site c.

 

Cool, that's what I thought. Just to be clear, there's no tricky way site C can find out that part A was part of the chain?

 

i wouldn't think so, but there is a chance that i could be wrong.

 

no there isn't.. referrer information goes only 1 layer deep, that's site B