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Cisco Router and Security Device Manager Version 2.2 User’s Guide
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Site-to-Site VPN
The help topics in this section describe the Site-to-Site configuration screens.

Create Site to Site VPN

A Virtual Private Network (VPN) lets you protect traffic that travels over lines that
your organization may not own or control. VPNs can encrypt traffic sent over
these lines and authenticate peers before any traffic is sent.
You can let Cisco Router and Security Device Manager (SDM) guide you through
a simple VPN configuration by clicking the VPN icon. When you use the Wizard
in the Create Site-to-Site VPN tab, SDM provides default values for some
configuration parameters in order to simplify the configuration process.
If you want to learn more about VPN technology, there is background information
at the link More About VPN.

Create a Site-to-Site VPN

This option allows you to create a VPN network connecting two r outers.

Create a Secure GRE Tunnel (GRE-over-IPSec)

This option allows you to configure a generic routing encapsulation protocol
(GRE) tunnel between your router and a peer system.