How exactly do major ISPs determine which types of traffic to let through unhampered and which types to throttle or block? With deep-packet inspection devices, such as the $800,000 Procera Networks PacketLogic PL10000. Ars Technica reports on the latest ammunition in ISPs’ arsenal:”The PL10000 can handle up to 5 million subscribers and can track 48 million real-time data flows. That’s certainly a potent piece of hardware, but larger ISPs will need more. That’s why Procera designed the new machines with full