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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt età la diffusion(More)
Multipoint relays offer an optimized way of flooding packets in a radio network. However, this technique requires the last hop knowledge: to decide whether or not a flooding packet is retransmitted, a node needs to know from which node the packet was received. When considering broadcasting at IP level, this information may be difficult to obtain. We thus(More)
— In this paper, we examine security issues related to proactive routing protocols for MANETs. Specifically, we investigate security properties of the Optimized Link-State Routing Protocol-one example of a proactive routing protocol for MANETs. We investigate the possible attacks against the integrity of the network routing infrastructure, and present(More)
Scalability is one of the toughest challenges in ad hoc networking. Recent work outlines theoretical bounds on how well routing protocols could scale in this environment. However, none of the popular routing solutions really scales to large networks, by coming close enough to these bounds. In this paper, we study the case of link state routing and OLSR, one(More)
Dans cet article, nous présentons les mesures de performances d'une implémentation du protocole de routage ad hoc OLSR. OLSR, abréviation de "Optimized Link State Routing", est un protocole de routage pour les réseaux sans fil soumis actuellement au groupe de standardisation MANET de l'IETF. OLSR est un protocole proactif, et par conséquent l'échange des(More)
In this paper we investigate security issues related to the Optimized Link State Routing Protocol -- one example of a proactive routing protocol for MANETs. We inventory the possible attacks against the integrity of the OLSR network routing infrastructure, and present a technique for securing the network. In particular, assuming that a mechanism for routing(More)
Wireless ad-hoc networks are autonomous, self-configurating and adaptive. Thus, such networks are excellent candidates for military tactical networks, where their ability to be operational rapidly and without any centralized entity is essential. As radio coverage is usually limited, multihop routing is often needed; this is achieved by an ad-hoc routing(More)
— In Mobile Ad Hoc Networks (MANETs), mobile nodes use wireless devices to create spontaneously a larger network, larger than radio range, in which communication with each other is made possible by the means of routing. One routing protocol for such MANET networks is OLSR, on which this article focuses. We examine the security issues, and describe an(More)
—Trends in fourth generation (4G) wireless networks are clearly identified by the full-IP concept where all traffic (data, control, voice and video services , etc.) will be transported in IP packets. Many proposals are being made to enhance IP with the func-tionalities necessary to manage the mobility of nodes, so that networks can provide global seamless(More)
In this paper, we investigate structural properties of multicast trees that give rise to the so-called multicast power law. The law asserts that the ratio R(n) of the average number of links in a multicast tree connecting the source to n destinations to the average number of links in a unicast path, satisfies asymptotically R(n)/spl ap/cn/sup /spl phi//,(More)