How to disable cookies in iframe?

Question

Nginx

Hello!
There is a site: https://www.example.com/
when requesting https://www.example.com/?parametr=XXXX , the user saves cookies
, so you need to limit the installation of such cookies if this address is loaded in an iframe
tried to send the X- header Frame-Options "SAMEORIGIN", the page does not load in an iframe, but cookies are still set.

Answer 1

put cookies only where necessary. or put on a separate iframe subdomain