Internet Protocol (IP) multicasting is a method for one-to-many and many-to-many\ncommunication between hosts in an IP network. This communication happens in a real-time synchronous\nfashion. It is a useful mechanism for distributing management data in a Local Area Network (LAN).\nManagement data includes frequent updating of host Operating System (OS), security patches, OS update\nfor network hardware, new configuration updates, etc. In the absence of any admission control or a source\nidentification, any host with malicious intent can disseminate malicious codes or rootkits exploiting\nthe underlying multicast framework. Routing protocols like RIPv2 and OSPF use a certain form of\nauthentication to exchange routing information with their peer routers. However, their authentication and\nthe distribution of routing information in its present form has several security and performance-related\nissues. Motivated through these problems, in this paper, we propose an efficient and scalable multicast\narchitecture for distributing management and routing information in a LAN.We use Core-based Tree\n(CBT) for constructing the multicast delivery tree and the pseudo identity-based encryption of the\nunderlying cryptosystem. We also demonstrate that our proposed multicast architecture is immune to a\nnumber of popular attacks.
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