What is Zone Based Policy Firewall?

Zone-Based Policy Firewall (also known as Zone-Policy Firewall, or ZFW) changes the firewall configuration from the older interface-based model to a more flexible, more easily understood zone-based model. Interfaces are assigned to zones, and inspection policy is applied to traffic moving between the zones.

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Accordingly, what is a zone based firewall?

A Zone-based firewall is an advanced method of stateful firewall. In stateful firewall, a stateful database is maintained in which source IP address, destination IP address, source Port number, destination port number is recorded.

Additionally, is Cisco ASA zone based firewall? Even though ASA devices are considered as the dedicated firewall devices, Cisco integrated the firewall functionality in the router which in fact will make the firewall a cost effective device. The zone based firewall came up with many more features that is not available in CBAC.

Furthermore, what are the general rules for applying Zone Based Policy Firewall?

Rules for applying Zone-based Policy Firewall:

A zone must be configured before an interface is assigned to it and an interface can be assigned to only a single zone.
All traffic to and from an interface within a zone is permitted.
All traffic between zones is affected by existing policies.

What is the minimum Cisco IOS version that supports zone based firewalls?

According to the Cisco IOS software advisor, zone-based firewalls were released in 12.4(6)T6 so that would be the minimum IOS release. All of these are later releases but none of them are working.

15 Related Question Answers Found

What is self zone?

" The self zone is zone created by default by the router. It has a permit policy by default, and it used to manage traffic directed to or generated by the router, not traffic that just travels through it.

What is packet filtering?

Packet filtering is a firewall technique used to control network access by monitoring outgoing and incoming packets and allowing them to pass or halt based on the source and destination Internet Protocol (IP) addresses, protocols and ports.

What is network zone?

A 'Network Zone' can consist of an individual machine (including a single home computer connected to Internet) or a network of thousands of machines to which access can be granted or denied. Background Note: A computer network is a connection between computers through a cable or some type of wireless connection.

What is DMZ server?

A DMZ, short for demilitarized zone, is a network (physical or logical) used to connect hosts that provide an interface to an untrusted external network – usually the internet – while keeping the internal, private network – usually the corporate network – separated and isolated form the external network.

What zone is Palo Alto?

Palo Alto, California is in USDA Hardiness Zones 9b and 10a.

What does stateful firewall mean?

In computing, a stateful firewall is a network firewall that tracks the operating state and characteristics of network connections traversing it. Only packets matching a known active connection are allowed to pass the firewall.

What is IOS firewall?

Protect your network with the Cisco IOS Firewall. The IOS Firewall is a stateful firewall that inspects TCP and UDP packets at the application layer of the OSI model. It watches the outgoing requests (usually to the Internet) and opens reciprocal, inbound ports for the return traffic.

How does zone based firewall handle traffic to and from self zone?

By default, how does a zone-based firewall handle traffic to and from the self zone? A. It inspects all traffic to determine how it is handled.

What is the only permitted operation for processing multicast traffic on Zone based firewalls?

What is the only permitted operation for processing multicast traffic on zone-based firewalls? Only control plane policing can protect the control plane against multicast traffic. Stateful inspection of multicast traffic is supported only for the self-zone.

What are two benefits of using a Zpf rather than a classic firewall?

What are two benefits of using a ZPF rather than a Classic Firewall? (Choose two.)

The ZPF is not dependent on ACLs.
With ZPF, the router will allow packets unless they are explicitly blocked.
ZPF policies are easy to read and troubleshoot.
Multiple inspection actions are used with ZPF.

Which does Cbac do on a Cisco IOS Firewall?

CBAC is a Cisco IOS Firewall set feature that provides network protection by using the following functions:

Traffic Filtering. CBAC filters TCP and UDP packets based on application-layer protocol session information.
Traffic Inspection.
Alerts and Audit Trails.
Intrusion Detection.