Sophos Firewall Administrator 2025 – 400 Free Practice Questions to Pass the Exam

An interface configured with a gateway is typically found in the WAN zone. The WAN (Wide Area Network) zone represents an interface that connects the internal network to external networks, such as the Internet. This interface must have a gateway because it serves as the point where data packets can be routed out to broader networks. The gateway is crucial for enabling devices within a local network to communicate with devices on external networks, allowing for Internet connectivity.

In contrast, LAN (Local Area Network) zones generally serve internal network traffic and may not require a gateway for local communication, as devices can directly communicate with each other. The DMZ (Demilitarized Zone) is often used for hosting services accessible from both internal and external networks but can also exist without needing a conventional gateway. VPN (Virtual Private Network) zones facilitate secure communications over public networks and do not generally operate with a standalone gateway since they rely on existing WAN or LAN configurations to establish their encrypted tunnels.

Thus, the presence of a gateway configuration is a defining characteristic of WAN interfaces, making this choice the appropriate answer in the context of identifying where interfaces are commonly set up with a gateway.