This article will look at a basic configuration for a route-based VPN between two Cisco IOS routers, using IKEv1 and IPsec for tunnel protection, and EIGRP for dynamic route advertisements based on the above topology. Workflow: Verify basic routing and reachabilityCreate and configure: LAN networksTunnel interfaceEIGRP processVerify basic GRE tunnel status and reachabilityCreate and configure:…… Continue reading Cisco IOS Route-Based VPN with IKEv1 PSK GREoIPsec and EIGRP