Think of a firewall as a bouncer at a nightclub - the firewall is located at the entrance to corporate networks, applications, databases and other resources. This network security device monitors incoming and outgoing network traffic and decides whether this traffic needs to stop or go (be allowed or blocked) based on a set of security rules. In computer networking, a firewall is a software program or hardware appliance that is designed to prevent unauthorized access to or from a private network. ![]() ![]() But in the world of computing, how does a firewall work to protect your network? This physical barrier can greatly minimize the damage caused by the flames. In the physical world, a firewall is a partition designed to inhibit or prevent the spread of fire.
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