Cisco CISCO876-SEC-I-K9 Configuration Guide - Page 67
Configuring a VPN Using Easy VPN and an IPSec, Tunnel
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CH A P T E R 6 Configuring a VPN Using Easy VPN and an IPSec Tunnel The Cisco 870 series routers support the creation of Virtual Private Networks (VPNs). Cisco routers and other broadband devices provide high-performance connections to the Internet, but many applications also require the security of VPN connections which perform a high level of authentication and which encrypt the data between two particular endpoints. Two types of VPNs are supported-site-to-site and remote access. Site-to-site VPNs are used to connect branch offices to corporate offices, for example. Remote access VPNs are used by remote clients to log in to a corporate network. The example in this chapter illustrates the configuration of a remote access VPN that uses the Cisco Easy VPN and an IPSec tunnel to configure and secure the connection between the remote client and the corporate network. Figure 6-1 shows a typical deployment scenario. Note The material in this chapter does not apply to Cisco 850 series routers. Cisco 850 series routers do not support Cisco Easy VPN. OL-5332-01 Cisco 850 Series and Cisco 870 Series Access Routers Software Configuration Guide 6-1