COMPUTER NETWORKING

Detailed explanation-1: -Explanation: Stateful inspection takes packet filtering to the next level. In addition to examining the header information of the packets traversing the firewall, a stateful inspection firewall considers other factors when determining whether traffic should be permitted across the firewall.

Detailed explanation-2: -A packet filtering firewall examines header information of data packets that come into a network. It determines whether to deny or allow (drop of forward) a packet into the next network connection. Packet filtering firewalls examine every incoming packet header.

Detailed explanation-3: -Proxy firewalls operate at the app layer, the highest level of the OSI model. These systems have deep packet inspection (DPI) capabilities that check both payloads and headers of incoming traffic.

Detailed explanation-4: -A packet filtering firewall is a networking device that examines the header information of data packets that come into a network and determines whether to deny them or forward them to the next network connection based on its configuration rules.

Detailed explanation-5: -Packet Filtering Firewall Packet filtering firewalls filter data by comparing the header information of a data packet to a set of predefined rules. These rules can be based on IP addresses, packet type, destination port number or any other aspect found in a data packet header.