The IP settings and interface settings of the SMA appliance can be configured by clicking on the blue arrow in the corner of the Network Interfaces section of the System > Status page. The link redirects you to the Network > Interfaces page that can also be accessed from the navigation bar. From the Network > Interfaces page, a SMA appliance administrator can configure the IP address of the primary (X0) interface, and optionally configure additional interfaces for operation.
For a port on your SMA appliance to communicate with a firewall or target device on the same network, you need to assign an IP address and a subnet mask to the interface.