Where is a firewall typically located in a network?

Where is a firewall typically located in a network?

• A. Between the device and its local network.
• B. Between networks.
• C. Inside the power supply.
• D. Only in the cloud.

Answer: (B)

Firewalls act as gatekeepers, controlling which traffic can move from one network to another by applying security rules. Because their job is to manage traffic crossing network boundaries, they are typically placed at the edge of a network—between the trusted internal network and an external or less trusted network (such as the internet) or between different network segments. This boundary placement lets the firewall inspect and filter all crossing traffic for security policies. Other placements aren’t as practical: being inside a power supply doesn’t relate to traffic control, and while host-based firewalls exist on individual devices, the common network-wide setup is at the boundary. Cloud firewalls exist too, but they aren’t the only location; a perimeter firewall at the network edge remains the standard concept.

Firewalls act as gatekeepers, controlling which traffic can move from one network to another by applying security rules. Because their job is to manage traffic crossing network boundaries, they are typically placed at the edge of a network—between the trusted internal network and an external or less trusted network (such as the internet) or between different network segments. This boundary placement lets the firewall inspect and filter all crossing traffic for security policies.

Other placements aren’t as practical: being inside a power supply doesn’t relate to traffic control, and while host-based firewalls exist on individual devices, the common network-wide setup is at the boundary. Cloud firewalls exist too, but they aren’t the only location; a perimeter firewall at the network edge remains the standard concept.