Cisco ASA and PIX Firewall Handbook

Chapter 11. Cisco IOS Firewall: Controlling Access

Refer to the following sections for information about these topics:

• 11-1: IOS Transparent Firewall— Discusses how an IOS firewall can be configured to become a Layer 2 “transparent” or “stealth” firewall. This configuration can be useful, because it doesn't segment a network when it is introduced. Instead, the firewall acts as a Layer 2 bridge with its full complement of stateful inspection features.

• 11-2: Configuring Network Address Translation— Covers methods that can be used to translate IP addresses across an IOS firewall.

• 11-3: Configuring IOS Firewall Stateful Inspection— Presents Content-Based Access Control (CBAC), the IOS firewall feature that inspects the state of each connection passing ...