Digging Deeper Into Deep Packet Inspection ( DPI )
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DPI is the foremost technology for identifying and authenticating protocols and applications (IP flows or sessions in general) conveyed by IP. This paper reviews DPI technology – what it does, how it works, methods of analysis it uses, and the opportunities it offers ISPs and carriers, such as new sources of revenue, solving bottleneck issues and guaranteeing Quality of Service (QoS).