This paper proposes a design for key management for secure multicast in hybrid satellite networks. Communication satellites offer an efficient way to extend IP multicast services for groups in wide-area networks. In order to be commercially viable, the multicast traffic should be accessible only to paying subscribers. Access control can be achieved by data encryption. This requires secure and e...

Active networks are networks that can be reprogrammed by injecting customized programs into some of the nodes of the network, which change the computation that is performed on packets flowing through them. Active networks have been successfully used to offer adaptable routing mechanisms in disaster scenarios, to dynamically compress data before transmitting, etc. In this paper, we discuss the a...

2 This paper discusses in depth the issues in using satellite links as the physical media for ATM internetworking and uses it to build a design guide for implementation of ATM over satellite networks. The challenge here is to provide ATM, a connection-oriented protocol developed specifically for a reliable high-bandwidth wired infrastructure, along with its QoS guarantees, for mobile networks, ...

Current TCP protocols have low throughput performance in satellite networks mainly due to the e!ects of long propagation delays and high link error rates. TCP-Peach is a new congestion control scheme for satellite IP networks based on the use of low priority segments, called dummy segments. The sender transmits dummy segments to probe the availability of network resources. Dummy segments are tr...

This paper deals with security for heterogeneous and inter-operable communication networks including a satellite segment. Integration of different networks enhances sustainable applications but specific vulnerabilities must be faced up too. INTERSECTION project is aimed to both design and implement an Intrusion Detection System (IDS) for the detention of anomalous events in the interconnected n...

This paper proposes the use of congestion pricing for achieving relative service differentiation in satellite IP networks. The idea is to use congestion pricing as an effective approach to control traffic rate for Transmission Control Protocol (TCP) flows, with Explicit Congestion Notification as a congestion feedback mechanism, by taking into account network users’ willingness-to-pay. With mul...

To enhance the performance of broadband satellite networks, the application characteristics should be considered in the design of the medium access control (MAC) protocol. With the rapid expansion of Internet applications and the attractiveness of high speed Internet access via broadband satellite networks, it is important to take into account the selfsimilar nature of Internet traffic in MAC p...

This paper reports a simulation study of the interaction between the Transmission Control Protocol (TCP) and Bandwidth on Demand (BoD) mechanisms in broadband satellite networks. It forms part of a broader effort aiming at the identification of the proper mechanisms and algorithms to efficiently carry TCP traffic over these networks. We investigate two aspects of this rather complicated interac...

Digital video broadcast return channel via satellite system (RCS) is a key European standard that specifies a broadband satellite system using dynamic capacity assignment and multi-frequency time-division multiple access. This study introduces new architectural components for an RCS system to support advanced Internet protocol (IP)-oriented multimedia. This will allow closer integration of sate...

This paper investigates the performance of integrated wireless sensor and multibeam satellite networks (IWSMSNs) under terrestrial interference. The IWSMSNs constitute sensor nodes (SNs), satellite sinks (SSs), multibeam satellite and remote monitoring hosts (RMHs). The multibeam satellite covers multiple beams and multiple SSs in each beam. The SSs can be directly used as SNs to transmit sensi...