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Getting Started with Cisco IOS IPS with 5.x Format
Signatures: A Step-by-Step Guide
This guide is divided into two sections: Getting Started with Cisco IOS
®
IPS and Signature
Tuning.
The first section of the guide provides a detailed step-by-step process using the Cisco IOS
Software command-line interface (CLI) to get started in using the Cisco IOS IPS 5.x format
signatures. It contains the following five steps:
Step 1: Downloading Cisco IOS IPS Files
Step 2: Creating Directory on Flash
Step 3: Configuring Cisco IOS IPS Crypto Key
Step 4: Enabling Cisco IOS IPS
Step 5: Loading Signatures to Cisco IOS IPS
Each step and specific commands are described. The Additional Commands and References
section under each step provides additional information. Example configurations are displayed in a
box below each command.
The second section of the guide provides instructions and examples on advanced options for
signature tuning. Topics include:
Enable/Disable Signatures
Retire/Unretire Signatures
Change Signature Actions
Prerequisites
Before getting started with the above steps, ensure that you have the following:
A Cisco 870, 1800, 2800, or 3800 Series Integrated Services Router
128 MB or more DRAM and at least 2 MB free flash memory
Console or Telnet connectivity to the router
Cisco IOS Software Release 12.4(11)T or later
A valid Cisco.com login username and password
A current Cisco Services for IPS Contract for licensed signature update services
You should be familiar with basic router commands for:
Exec mode
Configure mode
Exit configure mode
Backup and restore configuration
