Protocol channels as a new design alternative of covert channels
Steffen Wendzel · arXiv (Cornell University) · 2008
Covert channel techniques are used by attackers to transfer hidden data. There are two main categories of covert channels: timing channels and storage channels. This paper introduces a third category called protocol channels. A protocol channel switches one of at least two protocols to send a bit combination to a destination while sent packets include no hidden information themselves.