I was starting a simple project but when I use <iframe> a problem occurs, the problem of the page that I'm requesting does not appear.
I did a search on the subject and found some people talking about X-Frame-Options Header but I did not understand if this would solve my problem or would block external sites from 'requesting' my site as <iframe> , but I did not give up and tried to use <meta> , however I did not have the desired result.
Meta that I used
<meta http-equiv="X-FRAME-OPTIONS" content="DENY">