Poster: DNS Negative Caching in the Wild

Yehuda Afek, Anat Bremler-Barr, Lior Shafir, Neta Peleg, Matan Sabag
Poster and brief announcement
DDoS attack, DNS security


In this work we measure what percentage of DNS recursive
resolvers perform negative caching in the wild. We deploy
our own authoritative name server and harness thousands
of RIPE Atlas [3] sites spread over the globe to perform
repeated DNS queries for non-existing sub-domains of our
authoritative domain.


January 28, 2019
SRC 2019, Third Place - Lior Shafir, Student Competition
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  title={Dns negative caching in the wild},
  author={Shafir, Lior and Afek, Yehuda and Bremler-Barr, Anat and Peleg, Neta and Sabag, Matan},
  booktitle={Proceedings of the ACM SIGCOMM 2019 Conference Posters and Demos},