On the Reliability of Current Generation Network Eavesdropping Tools
نویسندگان
چکیده
This paper analyzes the problem of interception of Internet traffic from the eavesdropper’s point of view. We examine the reliability and accuracy of transcripts, and show that obtaining “high fidelity” transcripts is harder than previously assumed. Even in highly favorable situations, such as capturing unencrypted traffic using standard protocols, simple – and entirely unilateral – countermeasures are shown to be sufficient to prevent accurate traffic analysis in many Internet interception configurations. In particular, these countermeasures were successful against every available eavesdropping system we tested. Central to our approach is a new class of techniques that we call confusion, which, unlike cryptography or steganography, does not require cooperation by the communicating parties and, in some case, can be employed entirely by a third party not involved in the communication at all.
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تاریخ انتشار 2006