COMPUTER NETWORKING

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 a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or in a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets.

Detailed explanation-3: -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-4: -Firewalls do this by filtering data in network traffic to protect the network from a wide variety of malicious attacks and malware. Without firewalls to block cyber threats and prevent unauthorized access, computers and devices in your network are susceptible to attack.

Detailed explanation-5: -A firewall is a security measure designed to protect your computer or network against unauthorized access. Firewalls can be hardware-based or software-based. They are critical tools for protecting your computer or network against hackers and other online threats.