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Subtle Issues in the Design of a Database Tier Firewall: Applications such as centralized Supply Chain Management permit multiple business partners to host their own customized components at the same site with selective access to a common shared database. If the application software providers are not all trusting of each other, a Database Tier Firewall is necessary. This model assumes...; Tags: Firewall, Indian Institute Of Technology, Supply Chain Management (SCM), Storage, Databases, Enterprise Software, Software, Hardware, Data Management; White papers 2008-01-01
Anti-DDoS Virtualized Operating System: It is easier to detect a DDoS attack near the victim but it is of little use to do so. Many researchers believe that it would be best to handle DDoS attacks closer to the computers which host these attacks and have propounded various strategies for packet filtering at edge-routers....; Tags: Packet, Operating System, Distributed Denial Of Service, Indian Institute Of Technology, Computer, Productivity, Security; White papers 2007-12-31
An Integrated Framework for Proactive Mitigation, Characterization and Traceback of DDoS Attacks: Denial of Service DoS attacks pose a severe security threat to the steady functioning of any network. These attacks aim at depleting the resources of a server or an administrative network by overwhelming it with enormous and useless traffic. The outcome of this is the fact that legitimate users are...; Tags: Distributed Denial Of Service, Indian Institute Of Technology, Attack, Security; White papers 2007-03-01
Improving TCP Performance Over Mobile Wireless Environments Using Cross Layer Feedback: Transmission Control Protocol TCP is known to suffer from performance degradation in mobile wireless environments. This is because such environments are prone to packet losses due to high bit error rates and mobility induced disconnections. TCP interprets packet losses as an indication of congestion and inappropriately invokes congestion control mechanisms,...; Tags: Mobile, Environment, TCP, Indian Institute Of Technology, Tcp/Ip, Networking; White papers 2007-01-01
A Measurement Study of the Linux TCP/IP Stack Performance and Scalability on SMP Systems: The performance of the protocol stack implementation of an operating system can greatly impact the performance of networked applications that run on it. This paper presents a thorough measurement study and comparison of the network stack performance of the two popular Linux kernels: 2.4 and 2.6, with a special focus...; Tags: Performance, Scalability, Device Driver, Indian Institute Of Technology, Linux, Performance Management, Open Source, Operating Systems, Software, Human Resources, Workforce Management; White papers 2007-01-01

TCP K-SACK: A Simple Protocol to Improve Performance Over Lossy Links: This paper proposes k-SACK, a TCP variant that has considerably improved throughput characteristics over lossy links. A k-SACK source does not consider every packet loss as an indication of congestion. It uses the Selective Acknowledgement option to estimate a parameter lookaheadloss, which is used in congestion detection. The results demonstrate...; Tags: Performance, TCP, Indian Institute Of Technology, k-SACK, Tcp/Ip, Performance Management, Internet, Networking, Human Resources, Workforce Management; White papers 2006-10-11
An Extension of the TCP Flow Control Algorithm for Wireless Networks: Reliable transport protocols such as the Transmission Control Protocol TCP are tuned to perform well in traditional wireline networks where packet losses occur mostly because of congestion. However, networks with wireless and lossy links also suffer from significant packet losses due to bit errors and handoffs. TCP responds to all...; Tags: Algorithm, Method, Network, TCP, Indian Institute Of Technology, Wireless Network, Tcp/Ip, Networking, Wireless; White papers 2006-06-20
Authentication and Encryption in CDMA Systems: Mobile usage has virtually penetrated every aspect of our daily lives from the traditional voice communication to Short Message Services SMS, Mmultimedia Messaging Services MMS, ring tones, camera phones, games and a vast array of applications. In fact with the advent of 3G technologies most Service Providers are promising even...; Tags: Mobile, CDMA, Encryption, Indian Institute Of Technology, Authentication, Mobile Usage, 3G, Advertising & Promotion, Cellular Phones, Consumer Electronics, Personal Technology, Marketing; White papers 2005-08-18
Perishable Inventory Management and Dynamic Pricing Using RFID Technology: In supply chains that handle perishable products, inventory management is already a complex problem and the management of products in a dynamic-pricing environment is even more challenging. Monitoring and control of time-sensitive products can be facilitated by the application of Radio Frequency IDentification RFID technology, which enables non-contact, real-time data...; Tags: Inventory Management, Pricing Strategy, Indian Institute Of Technology, RFID, Supply Chain Management (SCM), Enterprise Software, Wireless, Security, Biometrics, Software; White papers 2005-04-01
Open Source: Is It Just One Big Hack?: A new phenomenon of Open Source Movement and Free Software has brought about a new revolution in the developer community. The latest buzz word in this field seems to be Open Source and almost everybody seems to be propagating the idea. This paper first gives an introduction as to what...; Tags: Indian Institute Of Technology, Open Source; White papers 2005-02-25
Improving Channel Estimation in OFDM Systems for Sparse Multipath Channels: This paper describes an algorithm for sparse channel estimation applicable to orthogonal frequency division multiplexing systems. The proposed algorithm uses a least squares LS technique for channel estimation and a generalized Akaike information criterion to estimate the channel length and tap positions. This effectively reduces the signal space of the...; Tags: Algorithm, Indian Institute Of Technology, Channel Estimation, OFDM, Engineering, Wireless; White papers 2005-01-01
An Architectural Framework to Deploy Scatternet-Based Applications Over Bluetooth: Bluetooth is a promising wireless personal area network technology and is on the verge of being ubiquitously deployed over a wide range of devices. The basic unit of a Bluetooth network is a centralized master-slave topology, namely a piconet, that can be easily extended into a multi-hop adhoc network called...; Tags: Indian Institute Of Technology, Bluetooth, Wi-Fi, Wireless; White papers
OVSF Code Allocation in CDMA Based Wireless Ad Hoc Networks: Wireless ad hoc networks provide a new dimension to computing by allowing a group of portable devices to talk to each other without any additional infrastructure and have been the focus of research in the area of wireless networks. CDMA has been gaining popularity as the multiaccess technique and is...; Tags: CDMA, Allocation, Indian Institute Of Technology, Wi-Fi, Wireless, Cellular Phones, Consumer Electronics, Personal Technology; White papers
Supporting Classes of Service in Bluetooth: Bluetooth is a wireless ad-hoc network concept primarily intended to eliminate the cables between portable and/or fixed electronic devices. Bluetooth supports both real-time voice and non-real-time data communication services. In this paper, a non-real-time communication service in Bluetooth is considered. Depending on its QoS (Quality-of-Service) requirements, the non-real-time traffic is...; Tags: Indian Institute Of Technology, Bluetooth, Wi-Fi, Wireless; White papers
ECLAIR: An Efficient Cross Layer Architecture for Wireless Protocol Stacks: Seamless mobility across heterogeneous mobile wireless technologies is now essential as mobile subscribers demand full and cost-effective wireless network coverage. Under such mobility conditions the layered protocol stack is inefficient. Significant research has been done for cross layer optimizations of the protocol stack. To enable rapid deployment of existing and...; Tags: Mobile, Optimization, Indian Institute Of Technology, ECLAIR, Protocol Stack, Wi-Fi, Wireless; White papers
Design and Performance Evaluation of Meghadoot - A Hybrid Wireless Network Architecture: This paper presents the design and evaluation of Meghadoot - a hybrid wireless network architecture that provides improved services, such as better connectivity among the users, efficient routing, and access to the Internet. Meghadoot architecture combines the advantages of both single-hop and multi-hop wireless networks. Meghadoot is extremely useful as...; Tags: Performance, Network, Performance Evaluation, Indian Institute Of Technology, Wireless Network, Meghadoot, Meghadoot Architecture, Wi-Fi, Wireless; White papers
A Caching Mechanism to Improve the Reliability of Multicasting in Multihop MANET: Reliable multicasting takes help of re-transmissions from the source, to recover lost packets .This imposes a huge overhead on the bandwidth-constrained ad hoc network. In On Demand Multicast Routing Protocol ODMRP, the multicast members send Join Replies to the periodic Join Queries initiated by the source, to maintain their membership....; Tags: Packet, Multicasting, Indian Institute Of Technology; White papers

Additional Resources

MSFT's acquisition of Powerset is not about search: The recent $100 million acquisition of Powerset, the semantic search engine company, by Microsoft looks to be more to do with advertising than beefing up the software giants' search capabilities. So far, Powerset has only demonstrated its technology against Wikipedia. It's a neat exhibit but it is...; Tags: Acquisition, Yahoo! Inc., Contextual Advertising, MSFT, Search, Tom Foremski; Blog posts 2008-07-04
Smart HCCI cars talk to the pump: Researchers from the Center for Information Technology Research in the Interest of Society CITRIS are developing more efficient engines for cars. They are specifically working on Homogeneous Charge Compression Ignited HCCI engines. An HCCI engine 'combines the efficiency and versatility of diesel engines with the cleanliness of spark-ignition engines.' For...; Tags: University Of California At Berkeley, Engine, Wi-Fi, Wireless, Roland Piquepaille; Blog posts 2008-07-04
Trick out your fleet with fuel consumption monitors from Networkcar: OK, I admit it. When I bought my car a year-and-a-half ago, comparing the fuel consumption metrics among the different models WAS part of the equation, but not the most important part. Now, with gas lines forming in my own little town and people putting summer trips...; Tags: Monitor, Performance, Technology, Performance Management, GPS, Human Resources, Workforce Management, Consumer Electronics, Personal Technology, Heather Clancy; Blog posts 2008-07-03