I just purchased the nexus 1 from google. I am able to set up a VPN from my phone to control my computer. sounds cool. There are four options
1)add PPTP VPN (point-to-point tunneling protocal)
2)add L2TP VPN (Layer 2 tunneling protocol)
3)add L2TP/IPSec PSK VPN (pre-shared key based L2TP/IPSec VPN)
4)add L2TP/IPSec CRT VPN (certificate based L2TP/IPSec VPN)
can I get some advise on these? which one is better? etc, etc. thanks