Thank you for your help!

I did a bios update! Reset to defaults..

The Astaro won't set up my pppoa connection. The FritzBox is setup as a modem. But it won't work - the interface is always down?
This is not a very big problem since I got another ADSL Modem as well.
(I'll try another time...)
Right now, the FritzBox handles the internet connectivity. Under Portforwarding there's this option calle "Exposed Host" --> Probably like DMZ. (Firewall is off - and all traffic will be sent to the Astaro (which is the exposed host).

I bought a managed 8 Port GB Switch from Linksys (Business Series).

My Idea was, since I'm only able to use a total of 2 NIC Cards, to use vlan's.

I created 2 Vlan's - 1 - green LAN, 2 - Wlan Accesspoint (different IP Range).

Is it possible to use the build in NIC (INTEL ATOM 330 Board) to address different vlan's (TAG???)
My second NIC is a D-Link GB Card - 530T.

If I got this right. I need to change my Network Settings (ASTARO) from Ethernet to Ethernet Vlan (+TAG of Vlan). I'm only able to use 1 NIC since the other NIC goes straight into the ADSL MOdem/Router.

Could anyone help, please?