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This chapter discussed Cisco industry-leading purpose-built firewall technology, highlighting the different platforms: the PIX 500 series, the ASA 5500 series, and the integrated Firewall Services Module (FWSM) for the Catalyst 6500 Series Switch and Cisco 7600 Series Router. The chapter focused on the features and solutions available on the appliance software and module software. Each section examined the technology and how to configure and effectively deploy it in the network environment.
The chapter was divided into two segments: discussion of features and configuration based on the appliance software for PIX 500 and ASA 5500 series platforms, followed by the firewall module software for FWSM. The chapter explained the core concepts, such as firewall modes, security contexts, inspection engines, various types of NAT, controlling traffic flow and network access through the firewall, MPF, and designing highly available, resilient networks.
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