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Zippier ZMap: Internet-Wide Scanning at 10 Gbps

Monday, August 4, 2014 - 11:30am
Authors: 

David Adrian, Zakir Durumeric, Gulshan Singh, and J. Alex Halderman, University of Michigan

Abstract: 

We introduce optimizations to the ZMap network scanner that achieve a 10-fold increase in maximum scan rate. By parallelizing address generation, introducing an improved blacklisting algorithm, and using zero-copy NIC access, we drive ZMap to nearly the maximum throughput of 10 gigabit Ethernet, almost 15 million probes per second. With these changes, ZMap can comprehensively scan for a single TCP port across the entire public IPv4 address space in 4.5 minutes given adequate upstream bandwidth. We consider the implications of such rapid scanning for both defenders and attackers, and we briefly discuss a range of potential applications.

David Adrian, University of Michigan

Zakir Durumeric, University of Michigan

Gulshan Singh, University of Michigan

J. Alex Halderman, University of Michigan

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BibTeX
@inproceedings {185139,
author = {David Adrian and Zakir Durumeric and Gulshan Singh and J. Alex Halderman},
title = {Zippier {ZMap}: {Internet-Wide} Scanning at 10 Gbps},
booktitle = {8th USENIX Workshop on Offensive Technologies (WOOT 14)},
year = {2014},
address = {San Diego, CA},
url = {https://www.usenix.org/conference/woot14/workshop-program/presentation/adrian},
publisher = {USENIX Association},
month = aug,
}
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