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I have a page confirm_payment.php receiving POST data from other pages. How can I make sure this POST data comes only from one specific domain?
I cannot rely on IP addresses as in my case this might change. I want to avoid “fake” submissions to my confirm_payment.php server side code.
Without going into details this is to make sure that my page receives confirmation from payment gateway hosted page and confirmation is genuine.
John Conde had a great explanation on how to solve your problem at: sending data to payment gateway and back – possible problems
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