Detection of encrypted packet streams using feedback probing
First Claim
1. A method comprising:
- measuring variation in a time interval between probe stream adjacent packets using an inserted known observable parameter as part of a probe stream transmitted via a communications network to determine a network-induced time variation; and
changing a time interval inserted between subsequent actual data packets transmitted via the communications network based on the network-induced time variation.
5 Assignments
0 Petitions
Accused Products
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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Citations
10 Claims
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1. A method comprising:
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measuring variation in a time interval between probe stream adjacent packets using an inserted known observable parameter as part of a probe stream transmitted via a communications network to determine a network-induced time variation; and changing a time interval inserted between subsequent actual data packets transmitted via the communications network based on the network-induced time variation. - View Dependent Claims (2, 3, 4, 5)
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6. A system comprising:
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a communications module stored in a memory device, and a processor communicatively coupled to the memory device; the communications module to measure variation in a time interval between probe stream adjacent packets using an inserted known observable parameter as part of a probe stream transmitted via a communications network to determine a network-induced time variation; and the communications module to change a time interval inserted between subsequent actual data packets transmitted via the communications network based on the network-induced time variation. - View Dependent Claims (7, 8, 9, 10)
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Specification