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Research Projects of the Computer Networks Group

EU FP7 MC-ITN CleanSky - Network for Cloud Computing Eco-System

CleanSky is an Initial Training Network (ITN) funded by the Marie-Curie-Actions within the 7th Framework Programme of the European Union (EU FP7).

For more details, please find in project webpage:

Mobile Cloud Computing

EU FP7 MC-IRSES project MobileCloud, coordinated by Prof. X. Fu of the University of Göttingen, aims to provide a stimulating and structured platform for the exchange of researchers and for the joint development of innovative ideas in the emerging areas within mobile cloud computing and beyond.

Network Friendly Transport for Delay-Insensitive Background Traffic

Delay-insensitive applications such as P2P file sharing and software updates generate substantial amounts of traffic. This traffic, transported potentially over multiple TCP connections, competes with traffic from other possibly interactive applications. Today, with TCP, they compete on an equal level for each individual connection. In this project, we investigate the transport mechanisms in particular congestion control for such delay-insensitive applications.

LENS: LEveraging social Networking and trust to prevent Spam transmission

Spam is still an open problem from the network operator’s perspective. The common state-of-the-art strategy to place filters against spam is at the recipient’s edge. Although this strategy largely solves the spam problem from the user’s perspective – false positives/negatives may still exist – it cannot prevent spam from traversing the Internet. Consequently, with nowadays around 200 billion spam/day, spam continues to consume large amounts of Internet bandwidth and provokes non-negligible financial loss to network operators.

Network Coordinate

Network coordinates (NC) system is an efficient mechanism for Internet latency prediction with scalable measurements. Our interest includes different perspective of NC systems, such as accuracy, security, deployment, applications and so on. Recently, we are working on the Triangle Inequality Violation (TIV) problem and the real-world deployment.

Social Networks

We have the following subprojects currently ongoing at Goettingen:

Secure and Fast Re-establishment of IPsec Sessions in Failover Scenarios

Recovering from failure of IPsec gateways maintaining large numbers of SAs may take several minutes, if they need to re-establish the IPsec SAs by re-running the key management protocol, IKEv2. A similar problem arises in the event of a network outage resulting in the failure of several gateways and servers. The latency involved in this approach is significant, leading to a need for a faster and yet secure failover solution.