X-Frame-Options: SAMEORIGIN) in the backend by default
- Find an appropriate place where to send these headers
- Add TYPO3_CONF_VARS configuration to disable it
- Provide possibility to disable this protection if not needed/ wanted.
- Coordinate with SecurityGuide writers to mention Webserver configuration for FE (no PHP implementation for frontend requests)
JS snippet to reveal body tag only when iframe included in correct parent url is not needed, as browsers supported by TYPO3 6.2 (Chrome, Safari, FF, IE >7) have support for X-Frame-Options