On Thu, 08 Jul 2004 11:49:24 +0200, Christophe Chisogne
<[EMAIL PROTECTED]> wrote:
> Shaun a écrit :
> > after lots of investigation it appears that it is just my laptop that won't
> > disply the variable, maybe because I am using Norton Firewall?
> 
> Possible. The REFERER HTTP field is OPTIONAL
> -- See http1.1 spec (rfc2616) or this list archives.
> So it's not a field anyone should rely upon.
> More and more software (firewall, proxies, privacy tools)
> just dont send it, or send it modified
> (same thing for the UserAgent field, which can even
>   be modified on several browsers)
> 
> > reason, is there an alternative server variable?
> 
> No. It can be empty or even (easily) faked.
> 

This is a variable that the client send you explicitly. Some firewall
software blocks sending it. You can even send a fake value. Basically,
you can't rely on it.

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