I&#x27;m not sure this is new. The technique of suppressing responses from the spoof source is as old as TCP sequencing, and was a prerequisite for Laurent Joncheray&#x27;s &quot;Simple Active Attack Against TCP&quot; that introduced session hijacking.<p>Also see:<p><a href="http:&#x2F;&#x2F;phrack.org&#x2F;issues&#x2F;64&#x2F;13.html" rel="nofollow">http:&#x2F;&#x2F;phrack.org&#x2F;issues&#x2F;64&#x2F;13.html</a>