Diogo Miguel da Costa e Castro Mónica de Oliveira
Co-orientação com o Professor Carlos Ribeiro
Thwarting the Sybil Attack in Wireless Ad Hoc Networks
Tese submetida para provas de mestrado em Engenharia de Redes de Comunicações,
Instituto Superior Técnico, Universidade Técnica de Lisboa.
Wireless ad hoc networking is a technology that allows fast,
easy, and inexpensive network deployment. Unfortunately, these
advantages also make the task of an attacker simpler, as it is also becomes
easier to deploy a malicious node in the environment. To make the
ad hoc network secure, one has often to rely on Byzantine
fault-tolerance techniques, which typically rely on quorum based
security protocols. However, quorums may be easily defeated if a
single adversary can participate in the network with multiple
identities, a behavior known as the Sybil Attack. This thesis
addresses the problem of preventing the Sybil Attack in wireless
ad hoc networks. It studies and compares techniques that have been
previously presented in the literature, and also proposes some new techniques. Finally, an efficient algorithm to mitigate
the sybil attack for to one-hop wireless networks, is also proposed.
- Thwarting The Sybil Attack in Wireless Ad Hoc Networks
- Diogo Miguel da Costa e Castro Mónica de Oliveira
- MSc Thesis. Instituto Superior Técnico, Universidade Técnica de Lisboa.
- July, 2009.
- Available BibTeX, MSC Thesis, and mid-term report.
- On the Use of
Radio Resource Tests in Wireless ad hoc Networks
- D. Mónica, J. Leitão, C. Ribeiro, L. Rodrigues.
- Proceedings of the 3rd
Workshop on Recent Advances on Intrusion-Tolerant Systems (WRAITS
2009), in conjunction with The 39th IEEE/IFIP International
Conference on Dependable Systems and Networks (DSN 2009), Estoril,
Lisbon, Portugal, June 29th, 2009.
- Available BibTeX,
abstract (html) and report (pdf).
- Contrução Observável de um Sistema de Quorum Não Sybil na Vizinhança Rádio de uma Rede Ad-Hoc Sem Fios
- D. Mónica, J. Leitão, L. Rodrigues, C. Ribeiro
- Actas do primeiro Simpósio de Informática (Inforum), Lisboa, Portugal, Sep, 2009
- Available BibTeX, extended report (pdf).