Exploitation of data streams authorized by a network access control system for arbitrary data transfers: tunneling and covert channels over the HTTP protocol
by Alex Dyatlov and Simon Castro - Thursday, 3 July 2003.
This paper presents various concepts to researchers and NACS administrators to explain that each time an administrator thinks he only allows the HTTP protocol to get in and out of his internal network, he also allows arbitrary data transfers through his secured perimeter.

Download the paper in TXT format here.

Spotlight

DMARC: The time is right for email authentication

Posted on 23 January 2015.  |  The DMARC specification has emerged in the last couple years to pull together all the threads of email authentication technology under one roof—to standardize the method in which email is authenticated, and the manner in which reporting and policy enforcement is implemented.


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