Discrete-time signal processing
Discrete-time signal processing
The linearity of low frequency traffic flow: an intrinsic I/O property in queueing systems
IEEE/ACM Transactions on Networking (TON)
On the constancy of internet path properties
IMW '01 Proceedings of the 1st ACM SIGCOMM Workshop on Internet Measurement
A non-instrusive, wavelet-based approach to detecting network performance problems
IMW '01 Proceedings of the 1st ACM SIGCOMM Workshop on Internet Measurement
Detecting shared congestion of flows via end-to-end measurement
IEEE/ACM Transactions on Networking (TON)
A signal analysis of network traffic anomalies
Proceedings of the 2nd ACM SIGCOMM Workshop on Internet measurment
Spectroscopy of Private DNS Update Sources
WIAPP '03 Proceedings of the The Third IEEE Workshop on Internet Applications
A framework for classifying denial of service attacks
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
A wavelet-based approach to detect shared congestion
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Avoiding traceroute anomalies with Paris traceroute
Proceedings of the 6th ACM SIGCOMM conference on Internet measurement
Multiple-Source Internet Tomography
IEEE Journal on Selected Areas in Communications
An analysis of packet sampling in the frequency domain
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
A frequency domain model to predict the estimation accuracy of packet sampling
INFOCOM'10 Proceedings of the 29th conference on Information communications
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We present an end-to-end active probing methodology that creates frequency-domain signals in IP network paths. The signals are generated by periodic packet trains that cause short-lived queueing delay spikes. Different probers can be multiplexed in the frequency-domain on the same path. Further, a signal that is introduced by a "prober" in one path can cause a crosstalk effect, inducing a signal of the same frequency into another path (the "sampler") as long as the two paths share one or more bottleneck queues. Applications of the proposed methodology include the detection of shared store-and-forward devices among two or more paths, the creation of covert channels, and the modulation of voice or video periodic packet streams in less noisy frequencies. In this paper we focus on the first application. Our goal is to detect shared bottleneck(s) between a "sampler" and one or more "prober" paths. We present a spectral probing methodology as well as the corresponding signal processing/detection process. The accuracy of the method has been evaluated with controlled and repeatable simulation experiments, and it has also been tested on some Internet paths.