COMPUTER NETWORKING

Detailed explanation-1: -Packet filtering firewalls are fast, cheap, and effective. But the security they provide is very basic. Since these firewalls cannot examine the content of the data packets, they are incapable of protecting against malicious data packets coming from trusted source IPs.

Detailed explanation-2: -A packet filtering firewall is a network security technique that regulates data flow to and from a network. It is a security mechanism that allows packets to move across networks while controlling their flow through the use of a set of rules, protocols, IP addresses, and ports.

Detailed explanation-3: -A packet filtering firewall is a network security feature that controls the flow of incoming and outgoing network data. The firewall examines each packet, which comprises user data and control information, and tests them according to a set of pre-established rules.

Detailed explanation-4: -In SOHO networks with a low-security need and a limited budget: Packet-filtering firewalls are used by many SOHO networks due to their ease of use and low cost when compared to other types of firewalls.