Detection of encrypted packet streams using feedback probing

Details Detection of encrypted packet streams using feedback probing Detection of encrypted packet streams using feedback probing

2004-09-17

2010-06-01

Moise, Emmanuel L (Department: 2437)

Information security

Access control or authentication

Reexamination Certificate

active

07730519

ABSTRACT:
Methods, systems, and devices are disclosed for detecting encrypted Internet Protocol packet streams. A probe stream having a known observable parameter is generated. The observable parameter exhibits a known characteristic of a known type of data encrypted within a stream of packets. The probe stream is communicated to a network element via a communications network. When the probe stream is received by the network element, the network element can compare the known observable parameter to an actual value. Any difference between the known observable parameter and the actual value can be used to correct for network-induced variation and other effects, thus ensuring accurate detection and identification of data types within encrypted streams of packets.

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