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[liberationtech] Scalable Network Forensics

Yosem Companys companys at
Sun Apr 24 10:46:06 PDT 2016

From: Matthias Vallentin <vallentin at>

Title:      Scalable Network Forensics
Speaker:    Matthias Vallentin
Advisor:    Prof. Vern Paxson
Date/Time:  Thursday, April 28, 3:30 - 4:30 p.m.
Location:   373 Soda Hall, UC Berkeley

Network forensics and incident response play a vital role in site
operations, but for large networks can pose daunting difficulties to
cope with the ever-growing volume of activity and resulting logs. On the
one hand, logging sources can generate tens of thousands of events per
second, which a system supporting comprehensive forensics must somehow
continually ingest. On the other hand, operators greatly benefit from
interactive exploration of disparate types of activity when analyzing an

In this talk, I present the design, implementation, and evaluation of
VAST (Visibility Across Space and Time), a distributed platform for
high-performance network forensics and incident response that provides
continuous ingestion of voluminous event streams and interactive query
performance. VAST leverages a native implementation of the actor model
to scale both intra-machine across available CPU cores, and
inter-machine over a cluster of commodity systems.
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