N66U with IPSec VPN tunnel

Hi Guys,
I have recently bought a N66U for my business and i expected that it supports IPSec vpn tunnel.
I need this to use with my client.
There is a way to enable it or install some firmware that supports?
I made some searches all the day on the web and i found that with tomato there is some module in development... but any clue that it works..
Sombody can help me?

Thanks.