Which technology extracts detailed information from packets and stores it in state tables?

Stateful Inspection is the technology that extracts detailed information from packets and stores it in state tables. It allows a firewall to keep track of active connections and make decisions based on the state of the traffic, rather than just examining individual packets in isolation.

This technology maintains a record of the status of active sessions, meaning that it can determine whether incoming packets are part of an established connection or if they are unsolicited. This is achieved by utilizing state tables that monitor each packet's connection information, such as source and destination IP addresses, port numbers, and the connection state. By doing so, Stateful Inspection enhances security by allowing legitimate packets and blocking potentially harmful ones based on their state in the table, thus enabling more sophisticated filtering than what is possible with other techniques.

While the INSPECT Engine, Packet Filtering, and Application Layer Firewalls also manage packet inspection and filtering, they do not emphasize state tables to the same extent as Stateful Inspection. The INSPECT Engine is more associated with deep packet inspection and behavioral analysis, while packet filtering looks at packet headers without maintaining session state. Application Layer Firewalls work at a higher level, concentrating on specific applications but might not utilize state tables in the same way. Thus, Stateful Inspection stands out as the key technology for extracting