What Does Deep Packet Inspection (DPI) Mean?
Deep packet inspection (DPI) is a form of filtering used to inspect data packets sent from one computer to another over a network. DPI is a sophisticated method of packet filtering that operates at the seventh layer (the application layer) of the Open System Interconnection (OSI) reference model. The effective use of DPI enables its users to track down, identify, categorize, reroute or stop packets with undesirable code or data.
Techopedia Explains Deep Packet Inspection (DPI)
DPI integrates the functions of an intrusion prevention system (IPS) and an intrusion detection system (IDS) with a conventional firewall. It is commonly used by communication engineers and service providers to manage network traffic. They can control network traffic by allocating valuable network resources to high-priority data packets and messages.
Despite its many benefits, DPI has the following limitations:
