Which type of firewall is best suited to protect an internal network from the Internet?

• A. Software
• B. Cloud
• C. Hardware
• D. Virtual

Answer: (C)

A hardware firewall placed at the network edge provides the strongest boundary between the Internet and the internal network. It’s a dedicated appliance designed to handle high traffic, offering centralized policy control and advanced filtering (such as stateful inspection, NAT, and VPN termination) across all internal subnets. Because it sits separately from end devices, it protects every host behind it and enforces consistent security across the entire network perimeter. Software firewalls protect individual machines, cloud firewalls target cloud environments, and virtual firewalls operate inside virtualized or cloud environments—none of which establish the same robust, centralized boundary for an on‑premises internal network.