Open HTTP proxies offer a quick and convenient solution for routing web traffic towards a destination. In contrast to more elaborate relaying systems, such as anonymity networks or VPN services, users can freely connect to an open HTTP proxy without the need to install any special software. Therefore, open HTTP proxies are an attractive option for bypassing IPbased filters and geo-location rest...

Many data stream sources (communication network traffic, HTTP requests, etc.) are prone to dramatic spikes in volume. Because peak load during a spike can be orders of magnitude higher than typical loads, fully provisioning a data stream monitoring system to handle the peak load is generally impractical. Therefore, it is important for systems processing continuous monitoring queries over data s...

Abstract--The growing importance of Web traffic on the Internet makes it important that we have accurate traffic models in order to plan and provision. In this paper we present a Web traffic model designed to assist in the evaluation and engineering of shared communications networks. Because the model is behavioral we can extrapolate the model to assess the effect of changes in protocols, the n...

HTTP/2 (h2) is a new standard for Web communications that already delivers a large share of Web traffic. Unlike HTTP/1, h2 uses only one underlying TCP connection. In a cellular network with high loss and sudden spikes in latency, which the TCP stack might interpret as loss, using a single TCP connection can negatively impact Web performance. In this paper, we perform an extensive analysis of r...

Abstract—Today, botnets have become a serious threat to enterprise networks. By creation of network of bots, they launch several attacks, distributed denial of service attacks (DDoS) on networks is a sample of such attacks. Such attacks with the occupation of system resources, have proven to be an effective method of denying network services. Botnets that launch HTTP packet flood attacks agains...

The purpose of this study was to investigate traffic flow characteristics at off-ramp junctions in Iranian expressways. The study was conducted on the traffic behavior in isolated off-ramp vicinity of 6-lane expressways. The database consisted of traffic flow and traffic speed information extracted from videotapes. The relationship between diverging traffic flow in the right lane of expressway ...

HTTP/1.1, protocol, World Wide Web, compliancy With the recent (draft) standardization of the HTTP/1.1 protocol on the Web, it is natural to ask what percentage of popular Web sites speak HTTP/1.1 and how compliant are these so-called HTTP/1.1 servers. We attempt to answer these questions through a series of experiments based on the protocol standard. The tests are run on a comprehensive list o...

Data security plays an essential role in today’s web service. Secure HTTP (HTTPS) is one of the popular protocols to transfer sensitive data over the Internet. This paper shows how the security affects performance compared to HTTP. Based on our preliminary measurements, the average response time ranges from 0.1 to 5 seconds, and from 6 to 8 seconds, for HTTP and HTTPS, respectively. Our experim...

The delivery of multimedia content is a facet of Internet traffic that is rapidly growing in importance. The new generation of World Wide Web sites are relying heavily on extensive multi-media content such as graphics, sound, music and video to attract and retain visitors. While there have been extensive studies on the growth and effects of Hyper Text Transfer Protocol (HTTP) traffic used on th...

In this paper, an open-loop multilevel ON/OFF model is proposed to capture the multifractal behavior of the HTTP traffic on the Internet. It is assumed that the life time of a TCP session and the active time of a burst within a TCP session have a heavy-tail type distribution. The aggregate traffic of this model is shown to be multifractal. We analyze its second and higher order statistics by th...