Williamson, Carey L.Arlitt, Martin F.Zhang, Zhengping2019-07-302019-07-302019-07-26Zhang, Z. (2019). A Campus-Level View of DNS Traffic (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.http://hdl.handle.net/1880/110684This thesis presents a characterization study of DNS traffic within the University of Calgary edge network. The traffic analysis is based on a one-week period of observation (from September 3, 2018 to September 9, 2018). We study the two directions (outbound and inbound) of the DNS traffic, representing the two roles that the campus plays in the DNS architecture, namely a user and a service provider. We selectively analyzed the traffic of a few campus DNS servers. In addition, we also examine several DNS-related anomalies. The measurement results show that a significant proportion of DNS messages come from misconfigurations or answers with short TTLs, which can both be improved to reduce the DNS traffic volume.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Network Traffic MeasurementDNSDNS AnomaliesComputer Sciencemaster thesishttp://dx.doi.org/10.11575/PRISM/36781