This chapter includes the following sections: To access these documents, see 'Related Documentation' section on page xi.

For up-to-date Cisco IOS security software features documentation, refer to the Cisco IOS Security Configuration Guide and the Cisco IOS Security Command Reference for your Cisco IOS Release. Some Cisco IOS security software features not described in this document can be used to increase performance and scalability of your VPN. This chapter describes basic features and configurations used in a remote access VPN scenario. Note In this Guide, the term `Cisco 7200 series router' implies that an Integrated Service Adaptor (ISA) or a VAM (VAM, VAM2, or VAM2+) is installed in the Cisco 7200 series router. Please refer to the 'Obtaining Documentation' section on page xii for instructions about locating product documentation. Please refer to your model configuration guide for detailed configuration information.

If you have a Cisco 2600 series router or a Cisco 3600 series router, your configurations will differ slightly, most notably in the port slot numbering. The configurations in this chapter utilize a Cisco 7200 series router. In the remote access VPN business scenario, a remote user running VPN client software on a PC establishes a connection to the headquarters Cisco 7200 series router. This chapter explains the basic tasks for configuring an IP-based, remote access Virtual Private Network (VPN) on a Cisco 7200 series router.

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