The Virtual Private Network Module for Cisco 1700 series routers optimizes the platform for virtual private networks (VPNs). A VPN delivers the benefits of a private network - security, manageability, quality of service - to a public network such as the Internet while lowering cost and increasing flexibility. The VPN module handles VPN security by implementing IP Security (IPSec), an industry-wide standard for assuring the privacy, integrity, and authenticity of information crossing public IP networks.Cisco offers bundle for 1700 routers that includes: VPN Module, Firewall IPSec 3DES, and Memory.