A zone is a logical method of grouping one or more interfaces with friendly, user-configurable names, and applying Access Rules (Classic Mode) or Security Policies (Policy Mode) as traffic passes from one zone to another zone. Zones provide an additional, more flexible, layer of security for the firewall. With the zone-based security, the administrator can group similar interfaces and apply the same Access Rules (Classic Mode) or Security Policies (Policy Mode) to them, instead of having to write the same policy for each interface.