Gert Pfeifer

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The main functionality of the Domain Name System (DNS) is to translate symbolic names into IP addresses. Due to the criticality of DNS for the proper functioning of the Inter-net, many improvements have been proposed for DNS in terms of security and dependability. However, the current secure DNS (DNSSEC) standard has still several problems that need further(More)
Structured P2P networks are a promising alternative for engineering new distributed services and for replacing existing distributed services like DNS. Providing competitive performance with traditional distributed services is however very difficult because existing services like DNS are highly tuned using a combination of caching and localized(More)
Building realistic Internet topologies is an important step towards predicting the behavior of new distributed applications and protocols. We are creating topologies that predict the distances between identifiable nodes in the In-ternet as it is today. These nodes are not anonymous average Internet nodes, but are known by name and network address. We are(More)
The Domain Name System (DNS) has been the naming service of the Internet for more than 20 years. It is the foundation of virtually all other distributed service. The deficiencies of DNS with respect to performance, availability, and reliability are well known. We want to systematically improve DNS by (1) measuring DNS performance, (2) evaluating past(More)
ii iii Abstract 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-Security-Enhanced 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(More)
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