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What is Cisco IOS Zone based Firewall

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Cisco IOS Zone Based Firewall is a router based firewall solution that can run in Cisco IOS based routers. A firewall is used to protect a network from external threats by enforcing access policies between different security domains. Cisco IOS Zone Based Firewall was introduced in IOS Release 12.4(6)T as replacement for the previous Cisco Context-Based Access Control (CBAC) firewalls. Cisco IOS Zone Based Firewall supports stateful inspection and also application inspection and control from OSI Layer 3 to Layer 7. Cisco IOS Zone Based Firewall also has the capability to monitor application layer protocols for RFC standards compliance.

Cisco IOS Zone Based Firewall can be used if an organization do not have the budget to buy a separate ASA firewall and have an ISR (Integrated Services Routers, for example Cisco 3900 Series or 2900 Series) with some unused interfaces which are not overloaded.

Following are the main differences between Cisco IOS Zone Based Firewall and Cisco Context-Based Access Control (CBAC) Firewalls.

IOS Zone Based Firewall Context-Based Access Control (CBAC) Firewalls
Zone Based Configuration Interface Based Configuration
Available from IOS 12.4(6)T Available from IOS 11.2
Application Inspection and Control is supported Application Inspection and Control is not supported
Uses Cisco Common Classification Policy Language (C3PL) Uses inspect statements and stateful ACLs

If you are looking for an in-depth Cisco IOS Zone Based Firewall guide, download it from below link.

Cisco IOS Zone Based Firewall guide

 

              Jajish Thomason Google+
Related Topics
Access Control Lists (ACLs) What is Cisco IOS Zone Based Firewall C3PL (Cisco Common Classification Policy Language), Class Map, Policy Map and Service Policy What are Zones and Zone Pairs How to configure Cisco IOS Zone Based Firewall

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