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The most challenging issue in content delivery networks (CDN) is to place the surrogate servers. K-means clustering can be chosen as a very simple and effective approach for placing the surrogates over the network. But the main concern of this approach is ...

Distributed Denial of Services (DDoS) has become the most intrusive security threat on the Internet. Flash crowd attack is the most challenging problem among the attacks which targeting the web server during the Flash Events (FEs). It mimics the ...

When thousands of new peers seek to join the peer-to-peer P2P system within a very short time i.e., the so-called flash crowd event, most of the peers suffer a long startup delay as a result of peer over-competition. Accordingly, recent studies have ...

Information Centric Networking (ICN) aims to evolve the Internet from a host-centric to a data-centric paradigm. In particular, it improves performance and resource efficiency in events with large crowds where many users in a local area want to generate ...

Cloud computing can offer a set of computing resources according to users' demand. It is suitable to be used to handle flash-crowd events in Web applications due to its elasticity and on-demand characteristics. Thus, when Web applications need more ...

A peer-to-peer (P2P) live streaming system faces a big challenge under flash crowds. When a flash crowd occurs, the sudden arrival of numerous peers may starve the upload capacity of the system, hurt its quality of service, and even cause system ...

The flash crowd is a network phenomenon where a network or host suddenly receives a lot of traffic. It is a serious problem for web servers because it causes the websites temporarily unavailable. However, conventional load distribution methods could not ...

Distributed denial-of-service (DDoS) attacks present an increasing threat to the global inter-networking infrastructure. While entropy schemes are highly robust to diverse network conditions, they remain vulnerable to distribute attacks that are similar ...

On March 11th 2011, a great earthquake and tsunami hit eastern Japan. After that, several web sites, especially those providing helpful disaster-related information, were overloaded due to flash crowds caused by Twitter users. In order to mitigate the ...

In recent years there is a rapid increase of traffic to a given web server within a short time as the number of Internet users increases, and such a phenomenon is called a flash crowd. Once flash crowds occur in the web server, a response rate decreases ...

HTTP GET flooding attack is considered to be one of the most successful attacks of Application Layer Denial of Service (App-DoS). Detection of such attack is difficult due to its non-intrusive nature. This paper presents an effective method for ...

Web-enabled business processes designed for travel industry and government agencies are considered as traffic intensive applications since number of users can fluctuate dramatically within a short time. Applications under this category are likely to ...

The goals of the present contribution are twofold. First, we propose the use of a non-Gaussian long-range dependent process to model Internet traffic aggregated time series. We give the definitions and intuition behind the use of this model. We detail ...

The paper studies two types of events that often overload Web sites to a point when their services are degraded or disrupted entirely - flash events (FEs) and denial of service attacks (DoS). The former are created by legitimate requests and the latter ...