Switching Security

In the past few years, switches have become equipped with features that make them more intelligent, allowing them to provide an active role in network security.

Cisco documentation refers to Catalyst integrated security (CIS). However, the term CIS refers only to built-in functionality that is native to the Catalyst switches, not to the security features inherent in the modules that can be installed in the switches (for example, firewall blades and so forth). Thus, in this book, we have categorized these two types of switch security as follows:

• Catalyst native security Those features built into the switch itself

• Catalyst hardware security Features of hardware that can be installed in the switch

These categories are described in the following sections. Note

Refer to Chapter 4, "Network Security Design," for general information on network security.

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