Nowadays, the demand for connection between remote offices of a company, or research locations, and constantly increasing work mobility (partly due to current pandemic emergency) have grown hand in with quality speed broadband connections. The logical consequence this scenario is increasingly widespread use Virtual Private Network (VPN) They allow one securely connect two ends via dedicated net...

This paper presents a mitigation scheme to cope with the random query string Denial of Service (DoS) attack, which is based on a vulnerability of current Content Delivery Networks (CDNs). The attack exploits the fact that edge servers composing a CDN, receiving an HTTP request for a resource with an appended random query string never saw before, ask the origin server for a (novel) copy of the r...

Adaptive video streams, when competing behind a single bottleneck link, experience unstable video quality, underutilized links, and unfair distribution of bandwidth. Different classes of solution have been proposed. On client side, bitrate adaptation algorithms have been designed to minimize the video bitrate changes as well as attain as high bitrate as the network resources allow. On the serve...

For many e-commerce applications, web pages are created dynamically based on the current state of a business, such as product prices and inventory, stored in database systems. This characteristic requires e-commerce websites to deploy and integrate web servers, application servers, and database systems at the backend. Response time is essential to many e-commerce applications. With increasing a...

To distribute video and audio data in real-time streaming mode, both CDN (Content Distributed Network) based and peer-to-peer based architectures have been proposed. However, each architecture has its limitations. CDN servers are expensive to deploy and maintain. The storage space and out-bound bandwidth allocated to each media file are limited and incur a cost. Current solutions to lowering su...

Content distribution networks (CDNs) increase the capacity of individual Web sites and attempt to deliver content from caches that are located “closer” to end-users than the origin servers that provide the content. CDN brokering provides CDNs a way to interoperate by allowing one CDN to intelligently redirect clients dynamically to other CDNs. This paper describes the goals, architecture, and p...

IP anycast routes packets to the topologically nearest server according to BGP proximity. UDP-based services (e.g., DNS resolvers and multicast rendez-vous points), which are based on a single request-response scheme, have been historically the first to use IP anycast. While there is a common belief in the Internet measurements community that stateful services cannot run on top of anycast due t...

In recent years, adaptive HTTP streaming protocols have become the de facto standard in the industry for the distribution of live and video-on-demand content over the Internet. In this thesis, we solve the problem of distributing adaptive HTTP live video streams to a large number of viewers using peer-to-peer (P2P) overlays. We do so by assuming that our solution must deliver a level of quality...

EAI Endorsed Transactions on Scalable Information Systems is a new open access scholarly archival journal that is committed to the timely publication of high-quality original research papers on all aspects of scalable communications theories, technologies, systems, and applications. Original contributions that have not been published and are not currently under consideration by any other journa...