Planning your VPN
It is a good idea to plan the VPN configuration ahead of time. This will save time later and help you configure your VPN correctly.
All VPN configurations are comprised of numerous required and optional parameters. Before you begin, you need to determine:
• Where the IP traffic originates and where it needs to be delivered
• Which hosts, servers, or networks to include in the VPN
• Which VPN devices to include in the configuration
• Through which interfaces the VPN devices communicate
• Through which interfaces do private networks access the VPN gateways
Once you have this information, you can select a VPN topology that suits the network environment.