Definitions for "Stateful Inspection"
Also referred to as dynamic packet filtering. Stateful inspection is a firewall architecture that works at the network layer. Unlike static packet filtering, which examines a packet based on the information in its header, stateful inspection tracks each connection traversing all interfaces of the firewall and makes sure they are valid.
Term used to describe one particular type of firewall architecture, whereby the firewall intercepts, analyses and takes action on all communications before they enter the operating system of the gateway machine.
Also referred to as dynamic packet filtering. It's a firewall architecture that works at the network layer. Stateful inspection checks both the header information and contents of the packet. As an added security measure against port scanning, stateful inspection firewalls close off ports until connection to the specific port is requested.