FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Detailed Solution. The correct answer is Firewall. A firewall can be defined as a special type of network security device or a software program that monitors and filters incoming and outgoing network traffic based on a defined set of security rules.

Detailed explanation-2: -A firewall interacts with traffic after the address translation and routing and controls and filters traffic according to the specified rules based on IP addresses. The router’s built-in firewall allows connections from home interfaces (LANs) to public networks (WANs) and prohibits them in the opposite direction.

Detailed explanation-3: -Proxy servers are the most secure type of firewall, as they filter packets through a protected proxy server. This is done before traffic even reaches the network perimeter.

Detailed explanation-4: -Network Security involves access control, virus and antivirus software, application security, network analytics, types of network-related security (endpoint, web, wireless), firewalls, VPN encryption and more.