COMPUTER NETWORKING

Detailed explanation-1: -A firewall plays a vital role in network security and needs to be properly configured to keep organizations protected from data leakage and cyberattacks. This is possible by configuring domain names and Internet Protocol (IP) addresses to keep the firewall secure.

Detailed explanation-2: -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.

Detailed explanation-3: -A Packet-filtering firewall should be used at the boundary of the network to give enhanced security. Every server having exposure to a public network such as the Internet will be placed in DMZ. Servers having crucial data will be equipped with host-based firewall software within them.