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.

Detailed explanation-2: -A firewall is a digital security system that checks all incoming and outgoing traffic on a network according to a defined set of rules. A firewall keeps out unauthorized traffic and lets in only communications that are deemed safe, using a set of security rules that you or your network administrator set up.

Detailed explanation-3: -A firewall can help protect your computer and data by managing your network traffic. It does this by blocking unsolicited and unwanted incoming network traffic. A firewall validates access by assessing this incoming traffic for anything malicious like hackers and malware that could infect your computer.

Detailed explanation-4: -At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet. A firewall’s main purpose is to allow non-threatening traffic in and to keep dangerous traffic out.

Detailed explanation-5: -A firewall is a security mechanism that prevents unwanted access to private data on your network. Firewalls also protect systems from harmful malware by establishing a barrier between trusted internal networks and untrusted external networks.