@conference {
	title = {Hybrid Internet Simulation Testbed},
	author = {Liu, Mingyan., Karir, Manish., Raissi-Dekhordi, Majid., Baras, John S.},
	year = {1999},
	month = {08/1999},
	abstract = {Internet technology as a widely accepted modern telecommunication standard has been widely extended to combine with numerous other technologies, e.g..,satellite, ATM, wireless. This is what we term as Hybrid Internet. Along with this technology emerging, various enhancements and alterations of standard TCP/IP for different purposes have been proposed and studied in-tensively. More and more frequently we are facing the question of how to choose from these different schemes to design a system for a particular purpose, which would inevitably involve the interaction and trade-of study. We believe that simulation is a powerful tool for this type of work. In this paper, we describe our implementation of a Hybrid Internet testbed which includes a series of traffic models and TCP/IP enhancements. The goal of our work is to make a set of reusable modules upon which we can build complex systems to study the standard protocols and their variations. We also present application examples using these module components.},
	address = {Washington DC},
	booktitle = {Proceedings of the 1999 OPNET Annual Technology Conference (OPNETWORK)},
	pages = {pp. 1-6}
}
@conference {
	title = {A Simulation Study of Enhanced TCP/IP Gateways for Broadband Internet over satellite},
	author = {Karir, Manish., Liu, Mingyan., Barrett, Bradley A., Baras, John S.},
	year = {1999},
	month = {08/1999},
	abstract = {The demand for Internet bandwidth has been growing rapidly over the years and the use of high bandwidth satellites has been proposed as one possible solution to meet the increasing demand. However, there are certain performance problems with providing Internet over satellite due to the nature of TCP/IP protocol suite and the satellite link characteristics. In this paper we describe a simulation study of architecture for improving the performance of TCP/IP over satellite links. On each end of satellite link, there are gateways that split the TCP ~connection so that the satellite link is transparent to the end hosts. The split TCP connection over the satellite segment is then optimized. TCP connection control is maintained on each segment of the split connection. We simulated such an architecture in OPNET and present results showing improved throughput over the satellite link.~},
	address = {Washington DC},
	booktitle = {OPNETWORK \&rsquo;99},
	pages = {pp. 1-6}
}
@conference {
	title = {An Information Theoretic Analysis of Rooted Tree Based Multicast Key Distribution Schemes},
	author = {Poovendran, Radha., Baras, John S.},
	year = {1999},
	month = {08/1999},
	abstract = {Several variations of rooted tree based solutions have been recently proposed for member revocation in multicast communications [18 ,19,20,21] .In this paper we show that by assigning Probabilities for member revocations,the optimality correctness and the system requirements of some these schemes [18,19,20,21 ] can be systematically studied using information theoretic concepts. Specifically, we show that the optimal average number of keys per member in a rooted tree is related to the entropy of the member revocation event. Using our derivation we show that (a) the key assignments in [18, 21, 20, 19] corresponds to the maximum entropy solution, (b) and direct application of source coding will lead to member collusion (we present recently proposed solutions [21, 20] as examples of this) and a general criteria that admits member collusion. We also show the relationship between entropy of member revocation event and key length.},
	address = {Santa Barbara, CA},
	booktitle = {Crypto\&rsquo;99: 19th Annual IACR Crypto Conference},
	pages = {pp.624-638}
}
