In this 60-second video, we explain what a firewall is and fundamentally, how it works. A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a private internal network and the public Internet, protecting the network from unauthorized access, viruses, and other security threats. Firewalls can be hardware or software-based, and they come in different types, including packet filte