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To alleviate the server bandwidth cost of online video sharing services, p2p delivering has been suggested as an effective tool with success already seen in accelerating individual sites. The numerous video sharing sites existed however call for a universal solution that provides transparent p2p acceleration beyond ad hoc solutions. More importantly, only a universal platform can fully explore the...
Recent years have witnessed an explosion of online video sharing as a new killer Internet application. Yet, given limited network and server resources, user experience with existing video sharing sites are far from being satisfactory. To alleviate the bottleneck, peer-to-peer delivering has been suggested as an effective tool with success already seen in accelerating individual sites. The numerous...
Unlike P2P-based live streaming, P2P-based video-on-demand (P2P-VoD) has asynchrony in sharing video content among users. To compensate, each peer is expected to contribute a fixed amount of disk space, which forms a distributed P2P storage system. How to regulate this storage system is undoubtedly one of the most important strategies in P2P-VoD systems. PPLive, a large-scale P2P-VoD system, has made...
As the number of VoIP users increase and as the deployment of SIP devices gains ground, security has risen as a potential issue worthy of our consideration. VoIP is an application running on the data network and as such, inherits the security issues common to IP. The man-in-the-middle (MitM) attacks and the denial of service (DoS) attacks are the hackneyed and evil cyber attacks in the IP which can...
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