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5th Annual Linux Showcase & Conference — Abstract
Pp. 61-70 of the Proceedings
Capturing Network Traffic with a MAGNeT
Jeffrey R. Hay, Wu-chun Feng, Mark K. Gardner, Computer & Computational Sciences Division, Los Alamos National Laboratory
Abstract
Current monitoring tools capture network traffic as it appears on the network but are incapable of capturing traffic
as it progresses through a running protocol stack. Thus, the current generation of tools cannot record true application-traffic
demands and cannot capture protocol-state information at run-time in order to help fine-tune network perfor-mance.
They also lend no insight into the modulating behavior of protocols (e.g., TCP) that have been shown to impact
network performance.
In this paper, we introduce MAGNeT Ñ Monitor for Application-Generated Network Traffic. MAGNeT consists
of both Linux kernel modifications and user-application programs. In addition to describing the implementation of
MAGNeT, we evaluate its performance and its potential use in applications such as network security, protocol tuning
and troubleshooting, and traffic characterization.
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