FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Proxy Firewalls. A proxy firewall (or application-level gateway) serves as an intermediate between internal and external systems. These firewalls protect a network by masking client requests before sending them to the host. Proxy firewalls operate at the app layer, the highest level of the OSI model.

Detailed explanation-2: -Network-based firewalls are deployed in line with the traffic flow, protecting the entire network. Host-based firewalls are operated on single computers, via OS-run software.

Detailed explanation-3: -There are two types of firewalls based on what they protect: network-based and host-based. Network-based firewalls, which are frequently hardware, protect entire networks. Host-based firewalls, which are frequently software, protect individual devices known as hosts.

Detailed explanation-4: -A host-based firewall is a piece of firewall software that runs on an individual computer or device connected to a network. These types of firewalls are a granular way to protect the individual hosts from viruses and malware, and to control the spread of these harmful infections throughout the network.

Detailed explanation-5: -A software-based firewall, or host firewall, runs on a server or other device. Host firewall software needs to be installed on each device requiring protection.