Security Basics mailing list archives

Re: HTTPS redirections


From: "Jason Ross" <algorythm () gmail com>
Date: Fri, 24 Aug 2007 17:12:56 -0400

On 8/24/07, anthony () synt3gra com <anthony () synt3gra com> wrote:
I have noticed how some websites only allow access to a particular
page if a link within the page has been 'clicked' ie. user cannot
paste link address in browser bar to get to desired page.
For security purposes I would like to create a script and achieve
similar results.

I believe that (at least one way) this is done is by checking the
referer header. In PHP this can be accessed via the predefined
variable: $_SERVER['HTTP_REFERER'], other languages should have
similar methods of obtaining this.

AFAIK, there is not a difference between HTTP and HTTPS as far as
this method is concerned.

--
Jason


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