Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 272 for “"dns"”.
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DNS-Sequenzierung durch Einzelmolekülhydrolyse
… ist, Lösungen auf dem Weg zu einer Einzelmolekül-DNS-Sequenzierung zu finden. Zunächst wird die Frage nach der Ausdehnung des Detektionsvolumens in Relation zur Kapillare mit Hilfe der Fluoreszenzkorrelationsspektroskopie beantwortet. Dazu wird eine Theorie der FCS mit einem …
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Protecting DNS from software errors
… and robustness of the Domain Name System (DNS) infrastructure. Unfortunately, the DNS suffers from a wide variety of problems arising from implementation errors, including vulnerabilities, bogus queries, and proneness to failure. In this work, we present a preliminary design and early …
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Bedeutung von DNS-Polymorphismen bei Arthrose
… die bestehende bzw. die in der Fallzahl erhöhte DNS-Bank auf weitere Polymorphismen von Genen, die im Arthroseprozess eine Rolle spielen (z.B. Il-1 ra, weitere MMPs, TIMP etc.), zu untersuchen. Interessant könnte auch die Kombination einzelner Varianten innerhalb eines Genclusters sein, …
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Kajszifajták genetikai analízise DNS-alapú markerekkel
… folyamatok felgyorsításának egyik eszköze a DNS-markerekre alapozott szelekció. Viszonylag egyszerően és egyértelmően azonosítható, változatos allélösszetételő, ismert szabályok szerint öröklődő markerlókuszok segítségével megvalósítható a fajtákban rejlő genetikai polimorfizmus kutatása, a …
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DNS of inhomogeneous reactants premixed combustion
… stratified reactants. A three-dimensional DNS of turbulent inhomogeneous reactants premixed combustion is performed to extend the investigation into turbulent flames. The methaneair combustion is represented by a complex chemical reaction mechanism with 18 species and 68 steps. The flame …
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Estudio e implementación de un Firewall DNS
… antivirus, pero, sin embargo, el protocolo DNS es comúnmente dejado de lado. Debido a que este protocolo se utiliza en prácticamente todas las interacciones de la navegación web, se propone el estudio e implementación de un firewall DNS. Mediante el uso de información de IPs y nombres de …
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DNS based routing protocol in ad hoc networks
… interconnected by multihop wireless networks. DNS Based Routing Protocol is introduced for use in the multi-hop wireless ad hoc networks. In this protocol, each node knows the node connectivity within its reachable set; some nodes have DNS capability, which are responsible for route discovery. …
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Measuring and Understanding TTL Violations in DNS Resolvers
The Domain Name System (DNS) is a scalable-distributed caching architecture where each DNS records are cached around several DNS servers distributed globally. DNS records include a time-to-live (TTL) value that dictates how long the record can be stored before it's evicted from the cache. TTL holds …
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Monitoring security of enterprise hosts via DNS data analysis
… all connected assets use the Domain Name System (DNS) for address resolution. Thus DNS has become a convenient vehicle for attackers to covertly perform Command and Control (C&C) communication, data theft, and service disruption across a wide range of assets. Enterprise security appliances that …
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Turbulent partially premixed combustion: DNS analysis and RANS simulation
… in turbulent partially premixed flames. DNS data of a laboratory-scale hydrogen turbulent jet lifted flame is analysed in this study. The partially premixed nature of this flame is established by examining the instantaneous and averaged reaction rates and the "Flame Index", which indicate …
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Physical Insights of Non-Premixed MILD Combustion using DNS
… In this thesis, Direct Numerical Simulation (DNS) is used to study turbulence, premixed flames and MILD combustion to obtain these additional physical insights. In a first stage, the scale-locality of the energy cascade is analysed by applying a multiscale analysis methodology, called the …
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Enhancing DNS data exfiltration protection through SDN data plane programming
… reported annually [1]. The Domain Name System (DNS) protocol has been a popular choice for malicious communication channels for many years; the vulnerability was first publicly discussed in 1998. Now, many years on, this vulnerability remains and exploits against it have grown more sophisticated …
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Survey And Evaluation of Secure-DNS Alternatives Through Passive Measurements
As security was not among the original DNS design goals, over ten secure-DNS schemes have been proposed to improve security and privacy during the name resolution process. One of the schemes is DNS-over-TLS (DoT), which relies on the Internet's PKI for establishing trust in recursive resolvers. …
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Network-Based Detection and Prevention System against DNS-Based Attacks
… servers and the victims. The domain name system (DNS) protocol is one of these approaches that adversaries use to transfer stolen data outside the organization's network using various forms of DNS tunneling attacks. The main reason for targeting the DNS protocol is because DNS is available in …
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Proof-of-Work Mitigation Strategy for DNS-Based Amplification Attacks
… Denial of Service attacks, and particularly DNS Amplification attacks, have seen a steady rise in deployment over the past few decades. DNS Amplification attacks, in particular, are challenging to identify and mitigate because of their apparent similarity to legitimate DNS traffic. This …
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LAMINAR TURBULENT TRANSITION - SPECTRAL ANALYSIS AND COHERENT STRUCTURES OF DNS WAVEPACKETS
… thesis concerns a direct numerical simulation (DNS) of wavepackets undergoing laminar turbulent transition in a Blasius boundary layer. A fully crossed factorial simulation design is used, in which 18 different wavepackets are analyzed to determine the combined effects of frequency, bandwidth …
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Performance of Algebraic Multigrid for Parallelized Finite Element DNS/LES Solvers
The implementation of a hybrid spectral/finite-element discretization on the unsteady, incompressible, Navier-Stokes equations with a semi-implicit time-stepping method, an explicit treatment of the advective terms, and an implicit treatment of the pressure and viscous terms leads to an algorithm …
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Empirically understanding the global impact of migration to DNS-over-HTTPS
It has long been established that using DNS-over-UDP poses multiple threats to security and privacy ranging from Man-in-the-Middle-attacks to your ISP keeping a track of what websites you are visiting. To overcome this the industry actors and researchers have come up with DNS-over-Encryption which …
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