Wyniki wyszukiwania dla: IEEE 802.11, NASH EQUILIBRIUM, QOS, RELAY NETWORKS, REPUTATION, SELFISH ATTACKS

• A Reputation Scheme to Discourage Selfish QoS Manipulation in Two-Hop Wireless Relay Networks

  Publikacja

  • J. Konorski
  • S. Szott

  - Rok 2018

  In wireless networks, stations can improve their received quality of service (QoS) by handling packets of source flows with higher priority. Additionally, in cooperative relay networks, the relays can handle transit flows with lower priority. We use game theory to model a two-hop relay network where each of the two involved stations can commit such selfish QoS manipulation. We design and evaluate a reputation-based incentive scheme...

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• Selfish Attacks in Two-Hop IEEE 802.11 Relay Networks: Impact and Countermeasures

  Publikacja

  • J. Konorski
  • S. Szott

  - IEEE WIRELESS COMMUNICATIONS LETTERS - Rok 2018

  In IEEE 802.11 networks, selfish stations can pursue a better quality of service through selfish MAC-layer attacks. Such attacks are easy to perform, secure routing protocols do not prevent them, and their detection may be complex. Two-hop relay topologies allow a new angle of attack: a selfish relay can tamper with either source traffic, transit traffic, or both. We consider the applicability of selfish attacks and their variants...

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• Modeling a Traffic Remapping Attack Game in a Multi-hop Ad Hoc Network

  Publikacja

  • J. Konorski
  • S. Szott

  - Rok 2017

  In multi-hop ad hoc networks, selfish nodes may unduly acquire high quality of service (QoS) by assigning higher priority to source packets and lower priority to transit packets. Such traffic remapping attacks (TRAs) are cheap to launch, impossible to prevent, hard to detect, and harmful to non-selfish nodes. While studied mostly in single-hop wireless network settings, TRAs have resisted analysis in multi-hop settings. In this paper...

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• Jerzy Konorski dr hab. inż.

  Osoby

  Katedra Teleinformatyki

  Jerzy Konorski otrzymał tytuł mgr inż. telekomunikacji na Poitechnice Gdańskiej, zaś stopień doktora n.t. w dyscyplinie informatyka w Instytucie Podstaw Informatyki PAN. W r. 2007 obronił rozprawę habilitacyjną na Wydziale Elektroniki, Telekomnikacji i Informatyki PG. Jest autorem ponad 150 publikacji naukowych, prowadził projekty naukowo-badawcze finansowane ze środków Komitetu Badań Naukowych, UE, US Air Force Office of Scientific...

• Traffic Remapping Attacks in Ad Hoc Networks

  Publikacja

  • J. Konorski
  • S. Szott

  - IEEE COMMUNICATIONS MAGAZINE - Rok 2018

  Ad hoc networks rely on the mutual cooperation of stations. As such, they are susceptible to selfish attacks that abuse network mechanisms. Class-based QoS provisioning mechanisms, such as the EDCA function of IEEE 802.11, are particularly prone to traffic remapping attacks, which may bring an attacker better QoS without exposing it to easy detection. Such attacks have been studied in wireless LANs, whereas their impact in multihop...

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• Double-Blind Reputation vs. Intelligent Fake VIP Attacks in Cloud-Assisted Interactions

  Publikacja

  • J. Konorski

  - Rok 2018

  We consider a generic model of Client-Server interactions in the presence of Sender and Relay, conceptual agents acting on behalf of Client and Server, respectively, and modeling cloud service providers in the envisaged "QoS as a Service paradigm". Client generates objects which Sender tags with demanded QoS level, whereas Relay assigns the QoS level to be provided at Server. To verify an object's right to a QoS level, Relay detects...

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• Discouraging Traffic Remapping Attacks in Local Ad Hoc Networks

  Publikacja

  • J. Konorski
  • S. Szott

  - IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS - Rok 2014

  Quality of Service (QoS) is usually provided in ad hoc networks using a class-based approach which, without dedicated security measures in place, paves the way to various abuses by selfish stations. Such actions include traffic remapping attacks (TRAs), which consist in claiming a higher traffic priority, i.e., false designation of the intrinsic traffic class so that it can be mapped onto a higher-priority class. In practice, TRAs...

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• Evaluation of IEEE 802.21 Handover between IEEE 802.11 and UMTS Networks

  Publikacja

  • P. Machań
  • A. Wieczorkowska
  • J. Woźniak

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Rok 2007

  The paper presents IEEE 802.21 - the ongoing standard for network handovers - illustrating its functional features, and considering and simulating a set of scenarios of mobile stations moving between IEEE 802.11 and UMTS networks. In order to evaluate the performance of IEEE 802.21 hanover packet loses and switching delays caused by hanover procedures are investigated. The authors discuss example results of simulation experiments...

• Mitigating Traffic Remapping Attacks in Autonomous Multi-hop Wireless Networks

  Publikacja

  • J. Konorski
  • S. Szott

  - IEEE Internet of Things Journal - Rok 2022

  Multihop wireless networks with autonomous nodes are susceptible to selfish traffic remapping attacks (TRAs). Nodes launching TRAs leverage the underlying channel access function to receive an unduly high Quality of Service (QoS) for packet flows traversing source-to-destination routes. TRAs are easy to execute, impossible to prevent, difficult to detect, and harmful to the QoS of honest nodes. Recognizing the need for providing...

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• Sylwester Kaczmarek dr hab. inż.

  Osoby

  Katedra Sieci Teleinformacyjnych

  Sylwester Kaczmarek ukończył studia w 1972 roku jako mgr inż. Elektroniki, a doktorat i habilitację uzyskał z technik komutacyjnych i inżynierii ruchu telekomunikacyjnego w 1981 i 1994 roku na Politechnice Gdańskiej. Jego zainteresowania badawcze ukierunkowane są na: sieci IP QoS, sieci GMPLS, sieci SDN, komutację, ruting QoS, inżynierię ruchu telekomunikacyjnego, usługi multimedialne i jakość usług. Aktualnie jego badania skupiają...