server-configs-nginx/h5bp/security/x-frame-options.conf

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Nginx Configuration File
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# ----------------------------------------------------------------------
# | Frame Options |
# ----------------------------------------------------------------------
# Protect website against clickjacking.
#
# The example below sends the `X-Frame-Options` response header with the value
# `DENY`, informing browsers not to display the content of the web page in any
# frame.
#
# This might not be the best setting for everyone. You should read about the
# other two possible values the `X-Frame-Options` header field can have:
# `SAMEORIGIN` and `ALLOW-FROM`.
# https://tools.ietf.org/html/rfc7034#section-2.1.
#
# Keep in mind that while you could send the `X-Frame-Options` header for all
# of your websites pages, this has the potential downside that it forbids even
# non-malicious framing of your content (e.g.: when users visit your website
# using a Google Image Search results page).
#
# Nonetheless, you should ensure that you send the `X-Frame-Options` header for
# all pages that allow a user to make a state-changing operation (e.g: pages
# that contain one-click purchase links, checkout or bank-transfer confirmation
# pages, pages that make permanent configuration changes, etc.).
#
# Sending the `X-Frame-Options` header can also protect your website against
# more than just clickjacking attacks.
# https://cure53.de/xfo-clickjacking.pdf.
#
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
# https://tools.ietf.org/html/rfc7034
# https://blogs.msdn.microsoft.com/ieinternals/2010/03/30/combating-clickjacking-with-x-frame-options/
# https://www.owasp.org/index.php/Clickjacking
add_header X-Frame-Options $x_frame_options always;