Any config tricks to stop site from framing us?

[Ian Evans]

On 2013-12-03 16:32, Branden Visser wrote:
> If they're using an iframe rather than a proxy then IP tricks won't 
> help.
>
> Using the X-FRAME-OPTIONS header is probably your best bet [1]
>
> Hope that helps,
> Branden
>
> [1]
> 
> http://stackoverflow.com/questions/2896623/how-to-prevent-my-site-page-to-be-loaded-via-3rd-party-site-frame-of-iframe

Thanks. Just did a cursory look, but does the header allow some sites 
to frame? e.g. letting stumbleupon do it but not others?