VPN Setup – Not Working

I am having a basic problem with VPN on a Simple Server home install. Here are my basics: My Server is Behind an existing Gateway/Router and sits on the Network 1) Setup Router ï router lan address = 192.168.1.1 ï subnet mask = 255.255.255.0 ï dhcp on ï dhcp server starts at = 192.168.1.9 ï dhcp server ends at = 192.168.1.200 ï dns server (opendns servers) = 208.67.222.222, 208.67.220.220 I used this setup for VPN Setup Server Preferences ï open server preferences ï go to file sharing: turn on file sharing ï go to vpn: turn on vpn shared secret = somethingsecretive ip address range = 192.168.1.101 - 192.168.1.199 ï go to users ï make new user(s) with all options enabled vpn type = L2TP over IPSec When I attempt to connect with wireless or ethernet, I get a failed to connect error. May 2 10:23:56 macbook-pro-15 pppd[4210]: L2TP connecting to server 'xxxx.dyndns.org' (24.2.xxx.xx)... May 2 10:23:59 macbook-pro-15 pppd[4210]: IPSec connection started May 2 10:24:09 macbook-pro-15 pppd[4210]: IPSec connection failed I've Got Dyndns working, and it appears the other services, File Sharing, Wiki, etc. Ideally, I would like to use this VPN connection when I am away from home to get email & browse securely.