FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The stateful inspection firewall (also known as circuit-level proxy or gateway) makes decisions about which traffic to allow based on virtual circuits or sessions. The firewall is considered stateful because it keeps track of the state of a sessions.

Detailed explanation-2: -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.

Detailed explanation-3: -Stateless firewalls are designed to protect networks based on static information such as source and destination. Whereas stateful firewalls filter packets based on the full context of a given network connection, stateless firewalls filter packets based on the individual packets themselves.

Detailed explanation-4: -Static Packet Filter This type of firewall decides whether to accept or deny individual packets, based on examining fields in the packet’s IP and protocol headers.