# config to don't allow the browser to render the page inside an frame or iframe # and avoid clickjacking http://en.wikipedia.org/wiki/Clickjacking # if you need to allow [i]frames, you can use SAMEORIGIN or even set an uri with ALLOW-FROM uri # https://developer.mozilla.org/en-US/docs/HTTP/X-Frame-Options add_header X-Frame-Options "SAMEORIGIN"; #Handled by CDN admin # when serving user-supplied content, include a X-Content-Type-Options: nosniff header along with the Content-Type: header, # to disable content-type sniffing on some browsers. # https://www.owasp.org/index.php/List_of_useful_HTTP_headers # currently suppoorted in IE > 8 http://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx # http://msdn.microsoft.com/en-us/library/ie/gg622941(v=vs.85).aspx # 'soon' on Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=471020 add_header X-Content-Type-Options "nosniff"; # This header enables the Cross-site scripting (XSS) filter built into most recent web browsers. # It's usually enabled by default anyway, so the role of this header is to re-enable the filter for # this particular website if it was disabled by the user. # https://www.owasp.org/index.php/List_of_useful_HTTP_headers add_header X-XSS-Protection "1; mode=block"; add_header Referrer-Policy "no-referrer-when-downgrade"; # with Content Security Policy (CSP) enabled(and a browser that supports it(http://caniuse.com/#feat=contentsecuritypolicy), # you can tell the browser that it can only download content from the domains you explicitly allow # http://www.html5rocks.com/en/tutorials/security/content-security-policy/ # https://www.owasp.org/index.php/Content_Security_Policy # I need to change our application code so we can increase security by disabling 'unsafe-inline' 'unsafe-eval' # directives for css and js(if you have inline css or js, you will need to keep it too). # more: http://www.html5rocks.com/en/tutorials/security/content-security-policy/#inline-code-considered-harmful # add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'"; #For Clouflare users comment this out as it's handle from the admin UI add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"; # Prevent search engine indexing add_header X-Robots-Tag "noindex, nofollow, nosnippet, noarchive";