L2TP/IPSec + Racoon

[mytrix]

> I has been installed L2TP/IPSec + Racoon on fBSD 5.3. It works perfect but
> there are some things, which i want to resolve.
> 
> 1. I`m using for authentification of clients shared_key. But it has some
> disadvantages. Clients are "road warrior" and it means, that i can`t know
> their IP in advance. So, it`s any way, how can i add it to psk.txt file? I
> test 0.0.0.0/0 SECRET_KEY, but it doesn`t work :(.

don't use pre-shared key.  or use aggressive mode.