FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -By analogy, in network security a firewall is a software-or hardware-based system that works as a gatekeeper between trusted and untrusted networks or its parts. It achieves this by filtering out harmful or potentially unwanted content and communication.

Detailed explanation-2: -What do firewalls do? Firewalls provide protection against outside cyber attackers by shielding your computer or network from malicious or unnecessary network traffic. Firewalls can also prevent malicious software from accessing a computer or network via the internet.

Detailed explanation-3: -Application-layer firewalls are best used to protect enterprise resources from web application threats. They can both block access to harmful sites and prevent sensitive information from being leaked from within the firewall.

Detailed explanation-4: -You could think of a firewall as a traffic controller. It helps to protect your network and information by managing your network traffic. This includes blocking unsolicited incoming network traffic and validating access by assessing network traffic for anything malicious like hackers and malware.

Detailed explanation-5: -How do firewalls work? A firewall decides which network traffic is allowed to pass through and which traffic is deemed dangerous. Essentially, it works by filtering out the good from the bad, or the trusted from the untrusted.