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A Mobile Ad hoc NETwork (MANETs) is a continuously changing wireless network that can be created without any pre-existing infrastructure in which each node can operate as a router. MANETs has no clear line of control, so it is accessible to both legitimate network users and malicious attackers. The main challenge in MANETs is to design a secure solution which can protect the MANET from various kinds of security attacks. In this paper, the authors put a first step towards securing multicast routing protocol for ad hoc network. Specifically, they examine the vulnerabilities of PUMA (Protocol for Unified Multicasting through Announcements) which is a representative of mesh based routing protocol.
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