COMPUTER FUNDAMENTALS

Detailed explanation-1: -A firewall is a network security device that prevents unauthorized access to a network. It inspects incoming and outgoing traffic using a set of security rules to identify and block threats. A firewall can be physical hardware, digital software, software as a service (SaaS) or a virtual private cloud.

Detailed explanation-2: -A firewall is essential software or firmware in network security that is used to prevent unauthorized access to a network. It is used to inspect the incoming and outgoing traffic with the help of a set of rules to identify and block threats by implementing it in software or hardware form.

Detailed explanation-3: -Network-based Firewalls Network firewall functions on the network level by employing two or more network interface cards (NICs). In other words, these firewalls filter all incoming and outgoing traffic across the network by using firewall rules.

Detailed explanation-4: -A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet.

Detailed explanation-5: -A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Either hardware, software, or a combination of both, the firewall establishes a barrier between a trusted internal network and untrusted external networks such as the Internet.