Workshop on Web Engineering -- A Parsimonious Multifractal Model for WWW Traffic -- Characteristics of Temporal and Spatial Locality of Internet Access Patterns -- A Scalable Architecture for Cooperative Web Caching -- Caching Web Services: Aspect Orientation to the Rescue -- Replicated Web Services: A Comparative Analysis of Client-Based Content Delivery Policies -- Internet Cache Location and Design of Content Delivery Networks -- A Server Placement Algorithm Conscious of Communication Delays and Relocation Costs -- The Yoix Scripting Language as a Tool for Building Web-Based Systems -- XGuide - A Practical Guide to XML-Based Web Engineering -- Process-Based Optimisation of Data Exchange for B2B Interaction -- Client—Side Profile Storage -- Boosting the Performance of Three-Tier Web Servers Deploying SMP Architecture -- Overload Behaviour and Protection of Event-Driven Web Servers -- Scalable Benchmarking and Performance Monitoring: A Coordination and Mobility Perspective -- Towards Specification-Based Web Testing -- Workshop on Peer-to-Peer Computing -- Routing in Mobile Ad-hoc and Peer-to-Peer Networks A Comparison -- Multi-layer Clusters in Ad-hoc Networks — An Approach to Service Discovery -- NeuroGrid: Semantically Routing Queries in Peer-to-Peer Networks -- Storage, Mutability and Naming in Pasta -- Text-Based Content Search and Retrieval in Ad-hoc P2P Communities -- Freeing Cooperation from Servers Tyranny -- BuddyWeb: A P2P-Based Collaborative Web Caching System -- Reliable Unicast Streaming with Multiple Peers in IP Networks -- The Client Utility as a Peer-to-Peer System -- P3: Parallel Peer to Peer An Internet Parallel Programming Environment -- Peer-to-Peer Programming with Teaq -- Towards a Data-Driven Coordination Infrastructure for Peer-to-Peer Systems -- Towards Adaptive, Resilient and Self-organizing Peer-to-Peer Systems -- Peer Pressure: Distributed Recovery from Attacks in Peer-to-Peer Systems -- Implementing a Reputation-Aware Gnutella Servent -- Transaction-Based Charging in Mnemosyne: A Peer-to-Peer Steganographic Storage System.

This book constitutes the refereed proceedings of the two thematic workshops held jointly with Networking 2002: WEB Engineering and Peer-to-Peer C- puting. Networking 2002 was organized by the Italian National Research Council (CNR) and was sponsored by the IFIP working groups WG 6.2 (Network and Intern- work Architectures), WG 6.3 (Performance of Communication Systems), and WG 6.8 (Wireless Communications). The program of the conference covered ?ve days and included the main conference (three days), two tutorial days, and one day of thematic workshops. TheInternationalWorkshoponWebEngineeringwasdedicatedtothedisc- sionoftheprincipalissuesthatemergeinthedesignandimplementationoflar- scale, complex, Web-based systems. Scalability issues pose a number of ch- lenging problems to solve for both applications and the underlying web/network infrastructure. On one hand, web services and internet applications must take into account network performance and transport protocol design, to achieve - ceptable performance and robustness. On the other hand, emerging network and Web technologies are determined by the requirements of these applications. Fifteen papers were presented that illustrated the current state of the art in this area. In addition to the authors of these papers, the Workshop on Web Engine- ing was attended by about thirty participants, who contributed to the workshop by stimulating fruitful discussions at the end of each presentation. Thus, this workshop provided a excellent opportunity for researchers, from both industry and academia, to gather, exchange ideas, and discuss recent results in the dev- opment of Web-based systems and emerging Internet applications.