This is a very general question, and probably does not have an easy answer. I have recently set up this router to use w/ my cable modem. It has dual ethernet ports and I have the external port set up to dhcp and the internal port set up to static. I have everything working correctly, and now I want to try to set up a vpn. I am aware that my external IP will change from time to time, but I am using ddns, and can find the new IP if I need to from an external spot. I am thinking about setting up the type of vpn that would require the cisco vpn client software on the client end. The problem is, I have no idea on what commands to use or where to start. Could anyone post a sample config or point me in the right direction? I am using IOS version 12.3 (11)T. Thanks for any help.