July 2012
Intermediate to advanced
700 pages
18h 24m
English
Content preview from CCNA Security 640-554 Official Cert Guide
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Chapter 13. Implementing Cisco IOS Zone-Based Firewalls
This chapter covers the following subjects:
Cisco has implemented some form of firewall protection in their IOS for many years. You can implement packet filtering with access lists applied to interfaces. The older firewall feature set named context-based access control (CBAC) provided stateful filtering. More recently, that CBAC has been replaced by a newer method for stateful filtering and application inspection called the Zone-Based Firewall (ZBF). This chapter is all about understanding and implementing the ZBF feature on an IOS-based router.
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