COMPUTER NETWORKING

Detailed explanation-1: -Firewall architecture is built upon four primary components-network policy, advanced authentication, packet filtering, and application gateways.

Detailed explanation-2: -Packet filtering A network layer firewall or packet-filtering firewall works at the network layer of the Open Systems Interconnection (OSI) model and can be configured to deny or allow access to specific ports or Internet Protocol (IP) addresses.

Detailed explanation-3: -A firewall can help protect your computer and data by managing your network traffic. It does this by blocking unsolicited and unwanted incoming network traffic. A firewall validates access by assessing this incoming traffic for anything malicious like hackers and malware that could infect your computer.

Detailed explanation-4: -Packet filtering firewall However, these firewalls don’t route packets; rather they compare each packet received to a set of established criteria, such as the allowed IP addresses, packet type, port number and other aspects of the packet protocol headers.