In this thesis I describe my research activities and results of the last 4 years. I also provide an outlook and guidelines on how to proceed with our project, that we named SEDNS SecurityEnhanced Domain Name System. This project’s ambitions are to complement DNS, the Domain Name System, in a way that allows us to keep using it in the future. The main reason for this strategy is, that it has pro...

The hereditary dysplastic nevus syndrome (DNS) is a well-characterized disorder in which affected individuals have increased numbers of premalignant (dysplastic) nevi and a markedly increased risk of developing cutaneous melanoma. Seeking evidence of a systemic disorder in DNS, we examined the effect of ultraviolet radiation on cultured lymphoid cells. Epstein-Barr virus-transformed lymphoblast...

Every DNS security-aware resolver must have at least one Trust Anchor to use as the basis for validating responses from DNS signed zones. For various reasons, most DNS security-aware resolvers are expected to have several Trust Anchors. For some operations, manual monitoring and updating of Trust Anchors may be feasible, but many operations will require automated methods for updating Trust Anch...

1. Strengths: The paper sketches the complexity of today's DNS infrastructure and shows a number of clever specific techniques to understand some aspects of DNS resolvers. The paper is written and presented well. It describes the complex infrastructure of DNS very well so that someone who is not keen on the system can also appreciate the paper. The reviewers also like the methodology to discove...

The goal of Link-Local Multicast Name Resolution (LLMNR) is to enable name resolution in scenarios in which conventional DNS name resolution is not possible. LLMNR supports all current and future DNS formats, types, and classes, while operating on a separate port from DNS, and with a distinct resolver cache. Since LLMNR only operates on the local link, it cannot be considered a substitute for DNS.

DNS dynamic updates can be used to modify the data of a DNS zone. This can be used to update DNS records of hosts with dynamic IP addresses, for example. DNS dynamic updates can be authenticated using the DNSSEC transaction signatures or the TSIG mechanism. While there are existing mechanisms for authenticating the source of update requests, mechanisms for authorization, i.e. specifying who is ...

— Domain Name System (DNS) maps domain names to IP addresses in the Internet. DNS can, however, be used as a Location Manager (LM) for mobility management in wireless mobile networks. The suitability and performance of DNS as a LM for locating mobile hosts (MH) has not been studied in the past. In this paper, we develop an analytical model to measure the performance of DNS as LM for IP diversit...

Domain Name System (DNS) is designed to transform human readable Internet addresses to corresponding Internet Protocol (IP) addresses. Current DNS relies on hierarchical infrastructure. It could be useful to use services provided by DNS in Local Area Networks (LAN) when there is no Internet connectivity. This can be caused by temporary network errors. There is proposals on using Distributed Has...

Almost every Internet communication is preceded by a translation of a DNS name to an IP address. Therefore monitoring of DNS traffic can effectively extend capabilities of current methods for network traffic anomaly detection. In order to effectively monitor this traffic, we propose a new flow metering algorithm that saves resources of a flow exporter. Next, to show benefits of the DNS traffic ...

Energy transfers within LES and DNS grids are studied. The spectral eddy viscosity for conventional dynamic Smagorinsky and variational multiscale LES methods are compared with DNS results. Both models underestimate the DNS results for a very coarse LES, but the dynamic Smagorinsky model is significantly better. For moderately to well-refined LES, the dynamic Smagorinsky model overestimates the...