TOGBAD-LQ - Using Challenge-Response to Detect Fake Link Qualities

Authors Elmar Gerhards-Padilla, Nils Aschenbruck, Peter Martini

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Elmar Gerhards-Padilla
Nils Aschenbruck
Peter Martini

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Elmar Gerhards-Padilla, Nils Aschenbruck, and Peter Martini. TOGBAD-LQ - Using Challenge-Response to Detect Fake Link Qualities. In 17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011). Open Access Series in Informatics (OASIcs), Volume 17, pp. 85-96, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)


The usage of link quality based routing metrics significantly improves the quality of the chosen paths and by that the performance of the network. But, attackers may try to exploit link qualities for their purposes. Especially in tactical multi-hop networks, routing may fall prey to an attacker. Such routing attacks are a serious threat to communication. TOGBAD is a centralised approach, using topology graphs to detect routing attacks. In this paper, we enhance TOGBAD with the capability to detect fake link qualities. We use a Challenge/Response method to estimate the link qualities in the network. Based on this, we perform plausibility checks for the link qualities propagated by the nodes in the network. Furthermore, we study the impact of attackers propagating fake link qualities and present simulation results showing TOGBAD's detection rate.
  • Fake Link
  • network
  • link quality
  • routing metrics


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