FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A packet-filtering firewall examines packets in isolation and does not know the packet’s context. A stateful inspection firewall examines network traffic to determine whether one packet is related to another packet.

Detailed explanation-2: -Packet-filtering firewalls operate at the network layer (Layer 3) of the OSI model.

Detailed explanation-3: -Packet Filtering Firewalls Packet filtering firewalls are the oldest, most basic type of firewalls. Operating at the network layer, they check a data packet for its source IP and destination IP, the protocol, source port, and destination port against predefined rules to determine whether to pass or discard the packet.

Detailed explanation-4: -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. To do so, stateless firewalls use packet filtering rules that specify certain match conditions.

Detailed explanation-5: -Stateful firewalls are capable of monitoring and detecting states of all traffic on a network to track and defend based on traffic patterns and flows. Stateless firewalls, however, only focus on individual packets, using preset rules to filter traffic.