@conference {
	title = {Dynamic Adaptation of Access Control Policies},
	author = {Bharadwaj, Vijay G., Baras, John S.},
	year = {2003},
	month = {10/2003},
	abstract = {We describe an architecture and algorithms for deriving an access control policy by composing access control requirements specified at multiple levels in a command hierarchy. Our method can detect conflicts in requirements, and find a policy that maximally satisfies the requirements, by satisfying higher priority requirements at the expense of lower priority ones. It also allows for easy verification of the final policy by an administrator. The architecture allows quick adaptation of policies to changing situations, by providing for delegation of authority while ensuring that high priority requirements will always be satisfied.},
	address = {Boston, Massachusetts},
	booktitle = {MILCOM 2003},
	pages = {pp. 761-766}
}
@conference {
	title = {Towards automated negotiation of access control policies},
	author = {Baras, John S., Bharadwaj, Vijay G.},
	year = {2003},
	month = {06/2003},
	abstract = {We examine the problem of negotiating access control policies between autonomous domains. Our objective is to develop software agents that can automatically negotiate access control policies between autonomous domains with minimal human guidance. In this paper, we show a mathematical framework that is capable of expressing many such negotiation problems~and illustrate its application to some practical scenarios.},
	address = {Lake Como, Italy},
	booktitle = {4th International Workshop on Policies for Distributed Systems and Networks},
	pages = {pp. 111-119}
}
@conference {
	title = {A framework for automated negotiation of access control policies},
	author = {Bharadwaj, Vijay G., Baras, John S.},
	year = {2003},
	month = {04/2003},
	abstract = {Our research examines the problem of negotiating access control policies between autonomous domains. Our objective is to develop software agents that can automatically negotiate access control policies between autonomous domains with minimal human guidance. In this paper we describe a mathematical framework that is capable of expressing many such negotiation problems, and illustrate its application to some practical scenarios.},
	address = {Washington DC},
	booktitle = {DARPA Information Survivability Conference and Exposition}
}
@conference {
	title = {On the Negotiation of Access Control Policies},
	author = {Gligor, Virgil D., Koleva, Radostina. , Bharadwaj, Vijay G., Baras, John S.},
	year = {2001},
	month = {04/2001},
	abstract = {Although the notion of negotiation has been used extensively in secure communication protocols to establish common keying states, protocol modes and services, this notion is only now emerging in the area of access control policies. In this paper, we review the motivation for access policy negotiation and we provide some examples of use in practice. In particular, we illustrate the meaning, the types, and the process of negotiation for establishing common access states and common interpretations of policy models for dynamic coalitions and large-scale access control in the Internet.},
	address = {Cambridge, United Kingdom},
	booktitle = {Security Protocols, Proceedings of 9th International Workshop},
	pages = {pp. 188-201}
}
@conference {
	title = {Internet Service via Broadband Satellite Networks},
	author = {Butts, Norman P., Bharadwaj, Vijay G., Baras, John S.},
	year = {1998},
	month = {01/1998},
	abstract = {The demand for Internet bandwidth has grown rapidly in the past few years. A new generation of broadband satellite constellations promise to provide high speed Internet connectivity to areas not served by optical fiber, cable, or other high speed terrestrial connections. However, using satellite links to supply high bandwidth has been difficult due to problems with inefficient performance of the Internet{\textquoteright}s TCP/IP protocol suite over satellite. We describe an architecture for improving the performance of TCP/IP protocols over heterogeneous network environments, especially networks containing satellite links. The end-to-end connection is split into segments, and the protocol in the satellite segment is optimized for the satellite link characteristics. TCP congestion control mechanisms are maintained on each segment, with some coupling between the segments to produce the effect of end-to-end TCP flow control. We have implemented this design and present results showing that using such gateways can improve throughput for individual connections by a large factor over paths containing a satellite link.},
	address = {Boston, Massachusetts},
	booktitle = {SPIE Voice, Video and Data Communications Symposium}
}
@conference {
	title = {Extensions of DBS and Hybrid Internet},
	author = {Karir, Manish., Bharadwaj, Vijay G., Holleman, Keith., Suphasindhu, Narin., Papademetriou, Spyro., Baras, John S.},
	year = {1997},
	month = {10/1997},
	abstract = {We describe some experiments which extend the DBS system, in particular, the DirecPC(TM) and DirecTV(TM) DBS, by using the PC with the satellite receiver as a gateway to connect networks together. We also discuss simple methods of receiving multimedia traffic from the multicast backbone (MBONE) [Cas94] over the satellite link, and distributing it, through this gateway, to end users.},
	address = {Budapest, Hungary},
	booktitle = {2nd ACM International Workshop on Satellite-Based Information Services (WOSBIS)},
	pages = {pp. 67-74}
}
@techreport {
	title = {Negotiating Access Control Policies Between Autonomous Domains},
	author = {Bharadwaj, Vijay G.},
	year = {2002},
	month = {01/2002},
	abstract = {Autonomous policy domains often need to share resources to accomplish a common task. To do this they must negotiate a common access control policy to the shared resources. We use mathematical techniques from game theory to show that the outcome of such negotiations can often be predicted from the distribution of power among the participants, independent of the actual mechanics of negotiation. We discuss the axiomatic derivation of some game theoretic solution concepts, and illustrate our techniques with examples.},
	number = {Number: CSHCN TR 2002-3}
}
@article {
	title = {An Architecture for Internet Service via Broadband Satellite Networks},
	author = {Bharadwaj, Vijay G., Baras, John S., Butts, Norman P.},
	year = {2001},
	month = {01/2001},
	abstract = {High bandwidth satellites offer the promise of a rapidly deployable communication infrastructure with a natural support for mobility. However, many used versions of the Transmission Control Protocol perform poorly over satellite links, and this presents an obstacle to the deployment of such systems. We present an architecture that overcomes these problems and allows easy integration of heterogeneous networks into the larger Internet. We also present some results from our initial implementation, which uses TCP connection splitting to improve TCP performance over satellite links.},
	pages = {pp. 29-50},
	volume = {Vol. 19},
	number = {Issue  1},
	journal = {International Journal of Satellite Communications}
}
