@inproceedings{d474c72664fa4884a3beaeda552c4963,
title = "Understanding the Challenges of Blocking Unnamed Network Traffic.",
abstract = "Network traffic that is not preceded by any Domain Name System (DNS) resolutions is referred to as unnamed traffic. Any DNS-based security system is ineffective against malicious content distributed through this traffic. In this paper, we introduce a novel method for identifying unnamed traffic based on the correlation of flows and DNS responses extracted from raw network traces. We describe two challenges that affect the validity of our method, and how to handle them. By applying our method to a one-week trace of network traffic, we illustrate that unnamed traffic is ubiquitous in a university network across nearly all client systems, destination IP addresses, and destination services. We conclude by presenting several open problems that prevent us from blocking unnamed traffic for security reasons.",
keywords = "DNS, network flows, network security, unnamed traffic",
author = "Kaspar Hageman and Egon Kidmose and Hansen, {Ren{\'e} Rydhof} and Pedersen, {Jens Myrup}",
note = "DBLP's bibliographic metadata records provided through http://dblp.org/search/publ/api are distributed under a Creative Commons CC0 1.0 Universal Public Domain Dedication. Although the bibliographic metadata records are provided consistent with CC0 1.0 Dedication, the content described by the metadata records is not. Content may be subject to copyright, rights of privacy, rights of publicity and other restrictions.; IEEE Symposium on Network Operations and Management, NOMS ; Conference date: 25-04-2023 Through 29-04-2023",
year = "2022",
doi = "10.1109/NOMS54207.2022.9789854",
language = "English",
isbn = "978-1-6654-0602-4",
series = "IEEE/IFIP Network Operations and Management Symposium",
publisher = "IEEE (Institute of Electrical and Electronics Engineers)",
pages = "1--5",
editor = "Pal Varga and Granville, {Lisandro Zambenedetti} and Alex Galis and Istvan Godor and Noura Limam and Prosper Chemouil and Jerome Francois and Marc-Oliver Pahl",
booktitle = "NOMS 2022-2022 IEEE/IFIP Network Operations and Management Symposium",
address = "United States",
}