The TPC-App is a B2B benchmark implementing a retail scenario. This benchmark specifies a set of web services interactions to test the performance of an application server. Today B2B systems undergo a permanent technological change. There even exist competitive technologies at the same time. From a business perspective it is important that the application systems of the business partners intero...

In an outsourced data framework, we introduce and demonstrate mechanisms for securely storing a set of data items (documents) on an un-trusted server, while allowing for subsequent conjunctive keyword searches for matching documents. The protocols provide full computational privacy, query correctness assurances and no leaks: the server either correctly executes client queries or (if it behaves ...

Providing fault tolerancy is crucial for a growing number of IP-based applications. There exist a lot of proprietary solutions for this problem, but free alternatives are rare. Currently, the IETF RSerPool working group is standardizing a protocol suite for Reliable Server Pooling, which copes with the challenge of providing high availability by using redundant servers. Servers for the same ser...

In recent years, there are more and more critical services being developed on the Internet with high requirements on availability and reliability. Distributed Denial-of-Service (DDoS) has become widespread and many web services have already been attacked. Server farms are one of the key approaches to improving the availability and reliability. However, due to the high maintenance cost and the “...

Reliable Server Pooling (RSerPool) is a framework to provide reliable server pooling. The RSerPool framework consists of two protocols: ASAP (Aggregate Server Access Protocol) and ENRP (Endpoint Handlespace Redundancy Protocol). This document defines an SMIv2compliant (Structure of Management Information Version 2) Management Information Base (MIB) module providing access to managed objects in ...

The reliable server pooling allows redundant information sources to be viewed as a single transport endpoint, and therefore is able to provide persistent connections and balanced traffic. The IETF RSerPool Working Group has proposed an architecture to implement the reliable server pooling. We conducted a number of simulation experiments with the current definitions of the RSerPool protocols to ...

VoIP technologies that enable Internet voice communication are spreading rapidly, with many telecommunication carriers already providing VoIP services based on these technologies. The market for this area is expected to become significantly larger as the number of subscribers continues to increase. VoIP technologies must first be enhanced, however, before VoIP services can support all the voice...