Here I will collect the things I know or find out.
I'll write about Ubuntu/Arch Linux, Windows, Bash and Perl Scripting, Virtualisation and whatever else that could be interesting.
All I'm going to write here is tested by myself. I don't give a warranty of the functionality on other systems.
If there are questions, suggestions or something else feel free to send me an mail.
I doesn't realy like Fritzbox's nor IPSec and myself I'm using a Netgear Router with Tomato and OpenVPN but I had to connect to this IPSec VPN from this Fritzbox 7170. I find Shrew IKE to do this and if you also want to connect to Fritzbox IPSec hear you can find out how did you get it to work. I used Arch Linux as IPSec Client.