Disable redirect on parent page when blog is accessed in iframe

Is it possible to disable redirect when you create iframe with some community page (GateIn blog in our case)?

You can imagine the behavior by creating new html file with:
<iframe src="http://blog.gatein.org"></iframe>

Our issue is that in GateIn portal there is a sample page with Iframe portlet which points to GateIn blog by default. And when anyone access this page, he's redirected on community.jboss.org instead of staying at portal environment.
Thanks for reply!