Physical Interfaces

The front panel of a SonicWall firewall has a number of physical interfaces. The number and type of interfaces depend on the model and version (for more information about the interfaces on your appliance, see the Quick Start Guide for your appliance):

Physical interfaces must be assigned to a zone to allow for configuration of Access Rules to govern inbound and outbound traffic. Security zones are bound to each physical interface where it acts as a conduit for inbound and outbound traffic. If there is no interface, traffic cannot access the zone or exit the zone.

For more information on zones, see About Zones.