Cisco IOS 12.3 Security Features

Cisco released new security features in IOS 12.3. See the Security Command Reference for more. From the docs:

By using a single command-line interface (CLI), the AutoSecure feature allows a user to perform the following functions:

• Disable common IP services that can be exploited for network attacks


• Enable IP services and features that can aid in the defense of a network when under attack.


• This feature also simplifies the security configuration of a router and hardens the router configuration.

For general Cisco texts, check out the Cisco documentation site I found this tutorial does a good job covering the basics.