How to Configure VPN in Cisco Routers

Virtual private network can be configured with most of the Cisco routers( 800 to 7500 series) with IOS version 12 or higher.VPN can be implemented in a number of ways–with various level of security measures and configuration. To determine the right VPN configuration for your network, you need to have a solid understanding in cryptographic system and encryption algorithm.Besides, one needs to know which type of VPN is suitable for remote clients  and which type of VPN  is used to create secure site-to-site connection. This article explains the necessary steps with configuration script to setup VPN in Cisco routers. This configuration can be simulated in Cisco packet tracer software as well.  [Read more…]