The Android (2.x/3.x) OS is known to be broken with respect to [http://www.amahi.org/apps/ipsec-vpn IPSec VPN]. See [[IPSEC/L2TP_VPN_Server|here]] for a manual implementation that should work.
By default, the VPN will only route traffic destined for your home network via the VPN. General web traffic etc, will *not* be encrypted. To change this behaviour so that all network traffic from your client is routed via your VPN, edit /etc/racoon/racoon.conf and remove the lines beginning "split_network" and "split_dns". The restart racoon.
= Changing Secret and/or Group Name =