Poster: Measuring Open Resolvers Negative Caching

Yehuda Afek, Anat Bremler-Barr, Neta Peleg
IMC,
2021
Poster and brief announcement
DNS security

Abstract

We investigate the negative caching (caching of NXdomain
responses) behavior on nine large open DNS resolvers. We
measure the amount of time an NXDomain response is kept
in the cache in various TTL configurations and compare it
to the time an existent domain is kept in the cache.

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@inproceedings{afek2021poster,
title={Poster: Measuring Open Resolvers Negative Caching},
author={Afek, Yehuda and Bremler-Barr, Anat and Peleg, Neta},
booktitle={ACM Internet Measurement Conference}
year={2021}
}