FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Stateful firewalls intercept packets at the network layer and then derive and analyze data from all communication layers to improve security. Information about connection state and other contextual data is stored and dynamically updated. This provides valuable context when evaluating future communication attempts.

Detailed explanation-2: -Stateful inspection, also known as dynamic packet filtering, is a firewall technology that monitors the state of active connections and uses this information to determine which network packets to allow through the firewall.

Detailed explanation-3: -A stateful firewall can filter application layer information, while a packet-filtering firewall cannot filter beyond the network layer. A packet-filtering firewall typically can filter up to the transport layer, while a stateful firewall can filter up to the session layer.