Santos:CCNA Sec 210-260 OCG

Zones and Why We Need Pairs of Them

A zone is a logical area where devices with similar trust levels reside. For example, we could define a DMZ for devices in the DMZ in an organization. A zone is created by the administrator, and then interfaces can be assigned to zones. A zone can have one or more interfaces assigned to it. Any given interface can belong to only a single zone. There is a default zone, called the self zone, which is a logical zone. For any packets directed to the router directly (the destination IP represents the packet is for the router), the router automatically considers that traffic to be entering the self zone. In addition, any traffic initiated by the router is considered as leaving the self zone. By default, any traffic ...