What is the difference between deep packet inspection and stateful inspection?

Question

Options

• ADeep packet inspection is more secure than stateful inspection on Layer 4
• BStateful inspection verifies contents at Layer 4 and deep packet inspection verifies connection at
• CStateful inspection is more secure than deep packet inspection on Layer 7
• DDeep packet inspection allows visibility on Layer 7 and stateful inspection allows visibility on

• A
  3% (1)
• B
  3% (1)
• C
  3% (1)
• D
  90% (27)

Explanation

Stateful inspection, a traditional firewall technology, operates at Layer 4 (the Transport layer) of the OSI model. It monitors the state of active connections by keeping track of the state of network connections (such as TCP handshakes) to determine whether incoming packets belong to established connections, allowing or denying them based on predefined rules. Deep packet inspection (DPI), on the other hand, goes beyond the information examined by stateful inspection. It operates at Layer 7 (the Application layer) of the OSI model and involves the thorough analysis of the content of packets. DPI scrutinizes the payload of packets, analyzing the actual data or application-specific information within packets.

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