Firewall Security Zones – Zone based Policy Firewall ZPF

We discuss Security Zones – Zone Policy Firewall (ZPF) in this video.
Firewall are there to secure our network (private network) from other networks (public network). Firewalls work on the basis of some rules or policies and these policies are applied to the interfaces of the router.
In security zones, multiple interfaces are combined in certain zones called security zones. Now the firewall policies or rules are applied to zones instead of individual interface of the router.
Sometime, we want to share some resources available in our private zone with the public zone network and in this case a third zone is created. This third zone is called demilitarized zone or DMZ.

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