The SonicWall TZ 100 features five configurable 10/100 Fast Ethernet ports, a serial console port, and two USB ports. By default, these Ethernet interfaces are assigned specific roles for out-of-the-box network setups, though they can be reassigned in the SonicOS interface.Default Ethernet PortsX0 (LAN): The primary Local Area Network port. This connects directly to your internal network, switch, or computer for configuration.X1 (WAN): The Wide Area Network port. This connects to your modem, router, or upstream internet service provider.X2, X3, X4: Configurable ports that can be assigned as additional LANs, a DMZ (Demilitarized Zone) for secure public servers, or secondary WAN connections for failover. This unit is