Jun
22
Deep packet inspection involves inserting equipment into a flow of online data, from emails and Internet phone calls to images and messages on social-networking sites such as Facebook and Twitter. Every digitized packet of online data is deconstructed, examined for keywords and reconstructed within milliseconds. In Iran’s case, this is done for the entire country at a single choke point, according to networking engineers familiar with the country’s system. It couldn’t be determined whether the equipment from Nokia Siemens Networks is used specifically for deep packet inspection.
Iran’s Web Spying Aided By Western Technology - WSJ.com