Chapter 10. Using Cisco IOS Firewalls to Defend the Network


This chapter covers the following topics:

  • Exploring firewall technology: This section explores the evolution of firewall technology. It also examines the use of firewalls to construct an overall network defense.

  • Using ACLs to construct static packet filters: This section examines access control lists (ACL) and how they can be used to construct a static packet-filtering mechanism for your environment. This section also looks at the construction of ACLs and examines how to place them on router interfaces to achieve the desired results.

  • Implementing a Cisco IOS zone-based firewall: Zone-based firewalls represent a significant advance in firewall technology. This section ...

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