Cyber Security

SPI (Stateful Packet Inspection)

In computing, a stateful firewall is a network firewall that tracks the operating state and characteristics of network connections traversing it. The firewall is configured to distinguish legitimate packets for different types of connections. Only packets matching a known active connection are allowed to pass the firewall.

Stateful packet inspection (SPI), also referred not to as dynamic packet filtering, is a security feature often included in business networks.

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