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Chris_Baiocchet's avatar
Chris_Baiocchet
Icon for Nimbostratus rankNimbostratus
Sep 24, 2020

Set x-frames-options header values depending on URI

Hello,   I am trying to write an irule that sets the x-frame-options header value to SAMEORIGIN or a site, unless the URI contains a specific string. In that case I would want the x-frames-optio...
BIG-IP
iRules
security
  • Enes_Afsin_Al's avatar
    Enes_Afsin_Al
    Sep 24, 2020

    Hi Chris,

    pay attention to use of "string tolower".

    [string tolower [HTTP::uri]] contains "/docsapi"
hedmondjohn's avatar
hedmondjohn
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May 23, 2022

X-Frame-Options is a header included in the response to the request to state if the domain requested will allow itself to be displayed within a frame. It has nothing to do with javascript or HTML, and cannot be changed by the originator of the request. You can't set X-Frame-Options on the iframe. That is a response header set by the domain from which you are requesting the resource . They have set the header to SAMEORIGIN in this case, which means that they have disallowed loading of the resource in an iframe outside of their domain. So you cannot embed their website into yours. Browsers when see that the response header contains X-Frame-Options: SAMEORIGIN, they check your domain and block the rendering of the <iframe>. It is a security measure to avoid clickjacking.